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Fair Value Measurements (Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis) (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Held-to-maturity investment securities $ 128,352 $ 100,483
Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Held-to-maturity investment securities 128,352 100,483
Deposits 1,212,434 1,026,830
Long-term debt 11,986 11,692
Subordinated debt 17,264 17,358
Level 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Net loans and leases 1,010,774 917,081
Carrying Value [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Held-to-maturity investment securities 131,293 101,356
Net loans and leases 999,472 902,798
Deposits 1,212,423 1,023,568
Long-term debt 12,297 12,352
Subordinated debt 17,335 17,338
Fair Value [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Held-to-maturity investment securities 128,352 100,483
Net loans and leases 1,010,774 917,081
Deposits 1,212,434 1,026,830
Long-term debt 11,986 11,692
Subordinated debt $ 17,264 $ 17,358