Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue Recognition
Non-interest Income In-scope of Topic 606									$ 4,510	$ 4,113
Non-interest Income Out-of-scope of Topic 606									5,734	5,461
Total noninterest income	$ 2,393	$ 2,618	$ 2,765	$ 2,468	$ 2,393	$ 2,206	$ 2,780	$ 2,195	$ 10,244	$ 9,574	$ 9,612