Balance Sheet Offsetting (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Gross derivative assets at fair value	$ 7,812	$ 8,214
Derivative assets, offsetting positions	5,642	0
Derivative assets, net amount	2,170	8,214
Derivative assets, cash collateral pledged	0	0
Gross derivative liabilities at fair value	8,248	8,266
Derivative liabilities, offsetting positions	5,642	0
Derivative liabilities, net amount	2,606	8,266
Derivative liabilities, cash collateral pledged	1,428	8,343
Interest rate caps [Member]
Gross derivative assets at fair value	134	187
Derivative assets, offsetting positions	0	0
Derivative assets, net amount	134	187
Derivative assets, cash collateral pledged	0	0
Interest rate swaps with customers [Member]
Gross derivative assets at fair value	4,920	8,027
Derivative assets, offsetting positions	2,884	0
Derivative assets, net amount	2,036	8,027
Derivative assets, cash collateral pledged	0	0
Gross derivative liabilities at fair value	2,884	0
Derivative liabilities, offsetting positions	2,884	0
Derivative liabilities, net amount	0	0
Derivative liabilities, cash collateral pledged	0	0
Mirror swaps with counterparties [Member]
Gross derivative assets at fair value	2,758	0
Derivative assets, offsetting positions	2,758	0
Derivative assets, net amount	0	0
Derivative assets, cash collateral pledged	0	0
Gross derivative liabilities at fair value	4,986	8,266
Derivative liabilities, offsetting positions	2,758	0
Derivative liabilities, net amount	2,228	8,266
Derivative liabilities, cash collateral pledged	1,295	8,343
Interest rate swaps [Member]
Gross derivative liabilities at fair value	378
Derivative liabilities, offsetting positions	0
Derivative liabilities, net amount	378
Derivative liabilities, cash collateral pledged	133
Other assets [Member]
Derivative offset against collateral, net	2,170	8,214
Other assets [Member] | Interest rate caps [Member]
Derivative offset against collateral, net	134	187
Other assets [Member] | Interest rate swaps with customers [Member]
Derivative offset against collateral, net	2,036	8,027
Other assets [Member] | Mirror swaps with counterparties [Member]
Derivative offset against collateral, net	0	0
Other liabilities [Member]
Derivative offset against collateral, net	1,178	(77)
Other liabilities [Member] | Interest rate swaps with customers [Member]
Derivative offset against collateral, net	0	0
Other liabilities [Member] | Mirror swaps with counterparties [Member]
Derivative offset against collateral, net	933	$ (77)
Other liabilities [Member] | Interest rate swaps [Member]
Derivative offset against collateral, net	$ 245