| **Pension Plans And Other Postretirement Benefits**            | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|----------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
||
| **Pension Plans And Other Postretirement Benefits [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| Pension Plans And Other Postretirement Benefits                | Note 9 – Pension Plans and Other Postretirement Benefits   

 

The Company maintains a qualified defined benefit pension plan (the “Pension Plan”), a nonqualified pension plan and other postretirement benefit plans for certain of its employees.  The net periodic benefit cost is based on estimated values and an extensive use of assumptions about the discount rate, expected return on plan assets, the rate of future compensation increases received by the Company’s employees, mortality, turnover, and medical costs.  The following tables provide the components of net periodic benefit cost: 

 

						 

						 

						 

						 

						 

						 

						 

						 

						 

						 

						 

						 

 

						 

						 

						 

						 

						 

						 

						 

						 

						 

						 

						 

						 

 

						 

Pension Benefits

 

						 

Three Months Ended

						 

Nine Months Ended

 

						 

September 30,

						 

September 30,

 

						 

2015

						 

2014

						 

2015

						 

2014

Service cost

						 

$
750 				
						 

$
1,004 				
						 

$
2,600 				
						 

$
3,291 				
Interest cost

						 

						 
3,255 				
						 

						 
3,564 				
						 

						 
9,699 				
						 

						 
10,589 				
Expected return on plan assets

						 

						 
(4,677)				
						 

						 
(4,495)				
						 

						 
(14,025)				
						 

						 
(13,105)				
Amortization of prior service cost

						 

						 
44 				
						 

						 
69 				
						 

						 
130 				
						 

						 
208 				
Amortization of actuarial loss

						 

						 
1,465 				
						 

						 
628 				
						 

						 
4,529 				
						 

						 
1,628 				
Curtailment loss

						 

						 

  -

						 

						 
84 				
						 

						 

  -

						 

						 
84 				
Net periodic benefit cost 

						 

$
837 				
						 

$
854 				
						 

$
2,933 				
						 

$
2,695 				
 

						 

						 

						 

						 

						 

						 

						 

						 

						 

						 

						 

						 

 

						 

Other

 

						 

Postretirement Benefits

 

						 

						 

Three Months Ended

						 

						 

Nine Months Ended

 

						 

						 

September 30,

						 

						 

September 30,

 

						 

2015

						 

2014

						 

2015

						 

2014

Service cost

						 

$
273 				
						 

$
283 				
						 

$
952 				
						 

$
878 				
Interest cost

						 

						 
681 				
						 

						 
722 				
						 

						 
2,120 				
						 

						 
2,181 				
Expected return on plan assets

						 

						 
(731)				
						 

						 
(686)				
						 

						 
(2,192)				
						 

						 
(2,057)				
Amortization of prior service cost

						 

						 
(211)				
						 

						 
(68)				
						 

						 
(476)				
						 

						 
(210)				
Amortization of actuarial loss

						 

						 
309 				
						 

						 
59 				
						 

						 
972 				
						 

						 
200 				
Net periodic benefit cost

						 

$
321 				
						 

$
310 				
						 

$
1,376 				
						 

$
992 				
 

The Company made cash contributions of $13,756 to its Pension Plan during the first six months of 2015,  which completed the Company’s 2015 cash contributions.  |

| X                                                                                                                                                                                                                     |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - References
No definition available.
+ Details**Name:**us-gaap_CompensationAndRetirementDisclosureAbstract**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The entire disclosure for pension and other postretirement benefits.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49170332&loc=SL14450702-114947Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2410-114920Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39675-114964Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414199&loc=d3e39622-114963
+ Details**Name:**us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock**Namespace Prefix:**us-gaap_**Data Type:**nonnum:textBlockItemType**Balance Type:**na**Period Type:**duration |