Short-Term Borrowings (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Short-term Debt [Line Items]
Short-term borrowings, amount	$ 12,731	$ 16,645
Short-term borrowings, interest rate	0.10%	0.30%
Line of credit [Member]
Short-term Debt [Line Items]
Short-term borrowings, amount	$ 18	$ 5,021
Short-term borrowings, interest rate	0.75%	0.75%
FHLB short-term advance [Member]
Short-term Debt [Line Items]
Short-term borrowings, amount	$ 0	$ 0
Short-term borrowings, interest rate	0.00%	0.00%
Repurchase agreements [Member]
Short-term Debt [Line Items]
Short-term borrowings, amount	$ 12,713	$ 11,624
Short-term borrowings, interest rate	0.10%	0.10%