Borrowings (Details 1) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Repurchase agreements:
Total borrowings	$ 50,493	$ 57,188
Gross amount of recognized liabilities for repurchase agreements	50,493	57,188
Mortgage Backed Securities, Other [Member]
Repurchase agreements:
Total borrowings	26,433	23,998
Collateralized Mortgage Backed Securities [Member]
Repurchase agreements:
Total borrowings	24,060	33,190
Maturity Overnight [Member]
Repurchase agreements:
Total borrowings	50,493	57,188
Maturity Overnight [Member] | Mortgage Backed Securities, Other [Member]
Repurchase agreements:
Total borrowings	26,433	23,998
Maturity Overnight [Member] | Collateralized Mortgage Backed Securities [Member]
Repurchase agreements:
Total borrowings	24,060	33,190
Maturity Less than 30 Days [Member]
Repurchase agreements:
Total borrowings	0	0
Maturity Less than 30 Days [Member] | Mortgage Backed Securities, Other [Member]
Repurchase agreements:
Total borrowings	0	0
Maturity Less than 30 Days [Member] | Collateralized Mortgage Backed Securities [Member]
Repurchase agreements:
Total borrowings	0	0
Maturity 30 to 90 Days [Member]
Repurchase agreements:
Total borrowings	0	0
Maturity 30 to 90 Days [Member] | Mortgage Backed Securities, Other [Member]
Repurchase agreements:
Total borrowings	0	0
Maturity 30 to 90 Days [Member] | Collateralized Mortgage Backed Securities [Member]
Repurchase agreements:
Total borrowings	0	0
Maturity Greater than 90 Days [Member]
Repurchase agreements:
Total borrowings	0	0
Maturity Greater than 90 Days [Member] | Mortgage Backed Securities, Other [Member]
Repurchase agreements:
Total borrowings	0	0
Maturity Greater than 90 Days [Member] | Collateralized Mortgage Backed Securities [Member]
Repurchase agreements:
Total borrowings	$ 0	$ 0