Earnings Per Share ("EPS") - Schedule of computation of basic and diluted earnings per share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Basic EPS:
Net income	$ 5,086	$ 1,905	$ (2,360)	$ 1,630	$ 2,728	$ 882	$ 4,631	$ 5,239
Net income allocable to common shareholders	5,086			1,630			4,631	5,239
Less earnings allocated to participating securities	44			11			41	196
Earnings allocated to common shareholders	$ 5,042			$ 1,619			$ 4,590	$ 5,043
Weighted average common shares outstanding (in shares)	23,515,737			23,355,639			23,497,792	22,605,608
Basic earnings (loss) per common share (in dollars per share)	$ 0.21			$ 0.07			$ 0.20	$ 0.22
Diluted EPS:
Earnings allocated to common shareholders	$ 5,086			$ 1,630			$ 4,631	$ 5,239
Add dilutive effects for assumed conversion of Series A preferred stock (in shares)	0			0			0	720,000
Weighted average diluted common shares outstanding (in shares)	23,719,628			23,656,570			23,711,992	23,605,390
Diluted earnings (loss) per common share (in dollars per share)	$ 0.21			$ 0.07			$ 0.20	$ 0.22
Restricted stock
Diluted EPS:
Add dilutive effects of restricted stock grants and stock options (in shares)	112,000			163,000			115,000	157,000
Stock units
Diluted EPS:
Add dilutive effects of restricted stock grants and stock options (in shares)	92,000			0			96,000	0
Stock options
Diluted EPS:
Add dilutive effects of restricted stock grants and stock options (in shares)	0			138,000			3,000	122,000