Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Supplemental financial data:
Cash paid for: interest		$ 13,612	$ 21,384	$ 13,567
Cash paid for: income taxes		17,672	10,557	8,694
Cash paid for: lease liability		1,242	1,205	0
Supplemental schedule of non-cash activity:
Net purchases of investment securities not yet settled		0	810	5,794
Transfer from loans to other real estate owned		0	255	$ 0
ROU lease assets: operating leases	[1]	$ 27	$ 19,635

[1] This represents the ROU lease asset that was recorded upon adoption of ASC 842 and new leases added in the current year.