| **Certificates of Deposit**       | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
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| **Banking and Thrift [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| Certificates of Deposit           | Certificates of DepositThe following table represents the breakdown of certificates of deposit at June 30, 2013 and 2012, and at December 31, 2012: June 30, 2013 December 31, 2012 June 30, 2012Certificates of deposit < $100,000$197,888,000 $199,265,000 $239,635,000Certificates $100,000 to $250,000334,361,000 277,571,000 313,742,000Certificates $250,000 and over37,160,000 28,220,000 60,501,000 $569,409,000 $505,056,000 $613,878,000 |

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| - Definition
The entire disclosure for deposit liabilities including data and tables. It may include a description of the entity's deposit liabilities, the aggregate amount of time deposits (including certificates of deposit) in denominations of $100,000 or more at the balance sheet date; the aggregate amount of any demand deposits that have been reclassified as loan balances, such as overdrafts, at the balance sheet date; deposits that are received on terms other than those in the normal course of business, the amount of accrued interest on deposit liabilities; securities, mortgage loans or other financial instruments that serve as collateral for deposits; for time deposits having a remaining term of more than one year, the aggregate amount of maturities for each of the five years following the balance sheet date; and the weighted average interest rate for all deposit liabilities held by the entity.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 14 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479006&loc=d3e64164-112818
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