Parent Company Statements (Condensed Balance Sheets) (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash and cash equivalents	$ 303,724,000	$ 139,030,000
Investment in subsidiaries	146,000	190,000
Other assets	17,493,000	15,312,000
Total Assets	2,998,948,000	2,231,175,000
Subordinated debt	44,580,000	27,070,000
Other liabilities	10,161,000	6,182,000
Shareholders' equity	255,688,000	237,874,000	$ 223,525,000	$ 75,694,000
Total Liabilities and Shareholders' Equity	2,998,948,000	2,231,175,000
Parent Company [Member]
Cash and cash equivalents	14,247,000	426,000
Investment in subsidiaries	286,545,000	254,829,000
Other assets	268,000	357,000
Total Assets	301,060,000	255,612,000
Subordinated debt	44,580,000	17,735,000
Other liabilities	792,000	3,000
Shareholders' equity	255,688,000	237,874,000
Total Liabilities and Shareholders' Equity	$ 301,060,000	$ 255,612,000