Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	$ 792	$ 727	$ 1,544	$ 1,405
Noninterest income (out-of-scope of Topic 606)	257	141	403	318
Total noninterest income	1,049	868	1,947	1,723
Maintenance fees
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	37	38	76	78
Overdraft fees
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	353	326	682	624
Other fees
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	73	71	142	141
Electronic banking fees
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	$ 329	$ 292	$ 644	$ 562