Other Income and Other Operating Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Other Income and Expenses [Abstract]
Professional services	$ 5,829	$ 4,323
Postage	2,236	1,726
Telephone	2,185	1,619
Credit card expense	4,382	3,860
Marketing	4,385	3,057
Software and technology	6,415	4,496
Operating supplies	936	618
Amortization of intangibles	3,413	2,641
Branch right sizing expense	238	45
Other expense	8,769	7,677
Total other operating expenses	$ 38,788	$ 30,062