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FHLB Advances, Other Borrowings and Junior Subordinated Notes Payable (Composition of Borrowed Funds) (Details) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
	Mar. 31, 2021	Jun. 30, 2020	Dec. 31, 2020
Composition of Borrowed Funds
Borrowed funds	$ 458,482,000		$ 429,229,000
Borrowed funds, average balance	$ 404,029,000		$ 429,624,000
Borrowed funds, interest rate during period	1.91%		1.91%
Federal funds purchased
Composition of Borrowed Funds
Borrowed funds	$ 0		$ 0
Borrowed funds, average balance	$ 0		$ 71,000
Borrowed funds, interest rate during period	0.00%		0.69%
Federal Reserve PPPLF
Composition of Borrowed Funds
Borrowed funds	$ 0	$ 29,600,000	$ 0
Borrowed funds, average balance	$ 0		$ 15,207,000
Borrowed funds, interest rate during period	0.00%	0.35%	0.35%
FHLB advances
Composition of Borrowed Funds
Borrowed funds	$ 415,800,000		$ 394,500,000
Borrowed funds, average balance	$ 366,670,000		$ 379,891,000
Borrowed funds, interest rate during period	1.36%		1.45%
Other borrowings
Composition of Borrowed Funds
Borrowed funds	$ 8,860,000		$ 920,000
Borrowed funds, average balance	$ 3,545,000		$ 676,000
Borrowed funds, interest rate during period	5.05%		12.60%
Subordinated notes payable
Composition of Borrowed Funds
Borrowed funds	$ 23,757,000		$ 23,747,000
Borrowed funds, average balance	$ 23,751,000		$ 23,725,000
Borrowed funds, interest rate during period	5.94%		5.95%
Junior subordinated notes
Composition of Borrowed Funds
Borrowed funds	$ 10,065,000		$ 10,062,000
Borrowed funds, average balance	$ 10,063,000		$ 10,054,000
Borrowed funds, interest rate during period	10.91%		11.09%

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