Other Real Estate Owned (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other Real Estate Owned Rollforward
Balance at beginning of the period	$ 72,060	$ 123,922	$ 83,146	$ 122,072
Write-downs in value	(706)	(1,476)	(1,983)	(2,885)
Additions	19,192	842	24,915	18,369
Sales	(17,172)	(9,339)	(32,704)	(23,712)
Other adjustments	(102)	(9)	(102)	96
Ending balance	73,272	113,940	73,272	113,940
Mortgages
Other Real Estate Owned Rollforward
Balance at beginning of the period	56,975	106,385	69,932	105,113
Write-downs in value	(549)	(671)	(1,519)	(1,571)
Additions	17,067	842	18,940	16,249
Sales	(14,519)	(9,089)	(28,379)	(22,429)
Other adjustments	(283)	(9)	(283)	96
Ending balance	58,691	97,458	58,691	97,458
Commercial / Construction
Other Real Estate Owned Rollforward
Balance at beginning of the period	15,085	17,537	13,214	16,959
Write-downs in value	(157)	(805)	(464)	(1,314)
Additions	2,125	0	5,975	2,120
Sales	(2,653)	(250)	(4,325)	(1,283)
Other adjustments	181	0	181	0
Ending balance	$ 14,581	$ 16,482	$ 14,581	$ 16,482