Other Real Estate Owned - Changes in Purchased and Non-Purchased OREO (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($)
Purchased OREO
Balance at January 1, 2019	$ 6,187
Transfers of loans	2,424
Impairments	(804)
Dispositions	(1,591)
Balance at September 30, 2019	6,216
Non Purchased OREO
Balance at January 1, 2019	4,853
Transfers of loans	1,189
Impairments	(317)
Dispositions	(3,750)
Balance at September 30, 2019	1,975
Total OREO
Balance at January 1, 2019	11,040
Transfers of loans	3,613
Impairments	(1,121)
Dispositions	(5,341)
Balance at September 30, 2019	$ 8,191