Other Operating Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Other Income and Expenses [Abstract]
Professional services	$ 3,492	$ 4,443	$ 7,815	$ 8,683
Postage	1,445	1,441	3,171	2,925
Telephone	1,480	2,064	3,099	2,969
Credit card expense	3,762	3,188	7,622	6,416
Marketing	2,436	1,765	5,493	3,407
Software and technology	5,580	3,335	10,076	5,983
Operating supplies	560	583	1,178	1,332
Amortization of intangibles	2,947	2,785	5,588	5,623
Branch right sizing expense	2,887	21	2,932	85
Other expense	8,278	6,560	15,955	14,256
Total other operating expenses	$ 32,867	$ 26,185	$ 62,929	$ 51,679