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Borrowed Funds (Long-term Borrowings) (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2008
Dec. 31, 2014
Mar. 31, 2014
Debt Disclosure [Abstract]        
Long-term borrowings $ 77,013us-gaap_LongTermDebt   $ 77,490us-gaap_LongTermDebt $ 123,492us-gaap_LongTermDebt
Basis spread on variable rate 0.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 2.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1    
Average interest rate paid on long-term borrowings 4.32%us-gaap_LongtermDebtWeightedAverageInterestRate     3.95%us-gaap_LongtermDebtWeightedAverageInterestRate