12. Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Total noninterest income	$ 2,147	$ 2,145	$ 5,879	$ 5,940
Service Charges on Deposits
Total noninterest income	378	359	1,102	1,010
Investment Services and Insurance Income
Total noninterest income	239	169	659	530
Title Insurance Income
Total noninterest income	404	247	966	668
ATM and check card fees
Total noninterest income	395	353	1,130	1,034
Other
Total noninterest income	142	129	390	368
Noninterest Income (in-scope of Topic 606)
Total noninterest income	1,556	1,257	4,247	3,610
Noninterest Income (out-of-scope of Topic 606)
Total noninterest income	$ 591	$ 888	$ 1,632	$ 2,330