Condensed Financial Information (Parent Company Only) - Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Assets
Total cash and cash equivalents	$ 249,711	$ 98,831	$ 58,492	$ 59,980
Other assets	93,564	66,628
Total assets	5,886,614	5,246,829
Liabilities
Subordinated notes	58,603	0
Junior subordinated debentures issued to capital trusts	56,548	56,311
Other liabilities	70,402	50,690
Stockholders’ Equity	692,216	656,023	491,992	457,078
Total liabilities and stockholders’ equity	5,886,614	5,246,829
Parent Company
Assets
Total cash and cash equivalents	127,044	50,961	$ 30,653	$ 13,361
Investment in subsidiaries	685,966	666,639
Other assets	3,902	3,882
Total assets	816,912	721,482
Liabilities
Subordinated notes	58,603	0
Junior subordinated debentures issued to capital trusts	56,548	56,311
Other liabilities	9,545	9,148
Stockholders’ Equity	692,216	656,023
Total liabilities and stockholders’ equity	$ 816,912	$ 721,482