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]
Non-interest Income In-scope of Topic 606	$ 769		$ 1,512
Non-interest Income Out-of-scope of Topic 606	2,011		3,463
Total noninterest income	2,780	$ 2,293	4,975	$ 4,588
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Disaggregation of Revenue [Line Items]
Non-interest Income In-scope of Topic 606		764		1,489
Non-interest Income Out-of-scope of Topic 606		1,529		3,099
Total noninterest income		2,293		4,588
Service charges and fees on deposit accounts
Disaggregation of Revenue [Line Items]
Non-interest Income In-scope of Topic 606	495
Service charges and fees on deposit accounts | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Disaggregation of Revenue [Line Items]
Non-interest Income In-scope of Topic 606		474
Dividends on preferred stock
Disaggregation of Revenue [Line Items]
Non-interest Income In-scope of Topic 606			973
Dividends on preferred stock | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Disaggregation of Revenue [Line Items]
Non-interest Income In-scope of Topic 606				939
Interchange fees
Disaggregation of Revenue [Line Items]
Non-interest Income In-scope of Topic 606	83		156
Interchange fees | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Disaggregation of Revenue [Line Items]
Non-interest Income In-scope of Topic 606		71		133
Merchant services revenue
Disaggregation of Revenue [Line Items]
Non-interest Income In-scope of Topic 606	39		83
Merchant services revenue | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Disaggregation of Revenue [Line Items]
Non-interest Income In-scope of Topic 606		39		85
Earnings per common share:
Disaggregation of Revenue [Line Items]
Non-interest Income In-scope of Topic 606			$ 300
Earnings per common share: | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Disaggregation of Revenue [Line Items]
Non-interest Income In-scope of Topic 606				$ 332
Other
Disaggregation of Revenue [Line Items]
Non-interest Income In-scope of Topic 606	$ 152
Other | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Disaggregation of Revenue [Line Items]
Non-interest Income In-scope of Topic 606		$ 180