Other Expenses (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Other Expenses
Mergers and acquisition expenses		$ 3,728	$ 1,831	$ 6,519	$ 2,045
Consulting and outside services		2,319	2,010	4,554	3,777
Telephone		1,313	1,210	2,551	2,385
Debit card expenses		1,197	1,435	2,290	3,304
Business development		923	1,123	1,971	2,013
VIE amortization and other expenses		1,045	906	1,886	1,451
Printing and supplies		924	786	1,827	1,511
Loan expenses	[1]	4,502	943	1,807	1,802
Employee expenses		644	1,405	1,687	2,401
Postage		833	823	1,628	1,656
Accounting and audit fees		550	472	998	925
Checking and operating expenses		551	630	908	992
Legal fees		386	281	819	588
ATM expenses		28	519	128	1,013
Other		955	910	1,870	1,688
Total other expenses		$ 19,898	$ 15,284	$ 31,443	$ 27,551

[1] Loan expenses include credit loss expense for off-balance sheet credit exposures.