Assets and Liabilities Subject to Enforceable Master Netting Agreements (Schedule of Liabilities Subject to an Enforceable Master Netting Arrangement or Repurchase Agreements) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Interest Rate Swap [Member]
Gross Amounts of Recognized Liabilities	$ (1,043)	$ (781)
Gross Amounts Offset in the Statement of Condition	0	0
Net Amounts of Liabilities Presented in the Statement of Condition	(1,043)	(781)
Gross Amounts Not Offset in the Statment of Condition: Financial Instruments	1,043	781
Gross Amounts Not Offset in the Statment of Condition: Cash Collateral Pledged	0	0
Net amount	0	0
Repurchase Agreements [Member]
Gross Amounts of Recognized Liabilities	37,707	48,845
Gross Amounts Offset in the Statement of Condition	0	0
Net Amounts of Liabilities Presented in the Statement of Condition	37,707	48,845
Gross Amounts Not Offset in the Statment of Condition: Financial Instruments	(37,707)	(48,845)
Gross Amounts Not Offset in the Statment of Condition: Cash Collateral Pledged	0	0
Net amount	$ 0	$ 0