| **Interest Rate Swap Agreements (Tables)**   | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
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| **Interest Rate Swap Agreements [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| Summary Of Fair Value                        | ﻿

						 

						 

						 

						 

						 

						 

						 

						 

						 

﻿

Derivative Assets

						 

Derivative Liabilities

﻿

March 31,

						 

March 31,

﻿

Balance Sheet Location

						 

2019

						 

Balance Sheet Location

						 

2019

﻿Derivatives not designated as hedging instrument:

						 

						 

						 

						 

						 

						 

						 

						 

						 

﻿Interest rate swaps

Current assets

						 

$

  -

						 

Current liabilities

						 

$
94,561 				
﻿ |
| Summary Of Amounts Recognized In Earnings    | ﻿

						 

						 

						 

						 

﻿

						 

						 

Amount of Gain (Loss) Recognized in Income on Derivatives

﻿

						 

						 

Three Months Ended March 31, 

﻿

Location of Gain (Loss) Recognized 

						 

2019

﻿Derivatives not designated as hedging instrument:

						 

						 

						 

						 

﻿Interest rate swaps

Other (expense) income

						 

$
(34,782)				
﻿                                                                                                                                                                                               |

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| - References
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| - Definition
Tabular disclosure of the effective portion of the gains and losses on derivative instruments designated (and non-derivative instruments) designated and qualifying in cash flow hedges and net investment hedges that was recognized in other comprehensive income (loss) during the current period.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position.
+ References
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