Other Noninterest Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Other Noninterest Income [Abstract]
Income from bank-owned life insurance	$ 2,883	$ 4,501	$ 5,535	$ 7,051
Credit related fees	2,898	2,267	5,776	4,624
Derivative income	2,680	533	3,145	394
Net (loss) gain on sale of assets	(60)	1,801	4,065	3,566
Safety deposit box income	391	413	840	891
Other miscellaneous	4,082	2,041	6,388	4,376
Total other noninterest income	$ 12,874	$ 11,556	$ 25,749	$ 20,902