Other Noninterest Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Other Noninterest Income [Abstract]
Income from bank-owned life insurance	$ 4,501	$ 2,671	$ 7,051	$ 5,337
Credit related fees	2,267	2,611	4,624	5,068
Derivative income	533	1,464	394	1,412
Net gain (loss) on sale of assets	1,801	(62)	3,566	(55)
Safety deposit box income	413	429	891	915
Other miscellaneous	2,041	2,412	4,376	5,092
Total other noninterest income	$ 11,556	$ 9,525	$ 20,902	$ 17,769