Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share, Basic and Diluted [Abstract]
Net income available to common stockholders	$ 3,737	$ 3,560	$ 11,926	$ 8,013
Average common shares outstanding (shares)	17,365,679	18,140,599	17,641,743	18,567,796
Less:
Unearned ESOP shares (shares)	0	0	0	(198,114)
Unvested restricted stock shares (shares)	0	(940)	(435)	(940)
Weighted average common shares outstanding (shares)	17,365,679	18,139,659	17,641,308	18,368,742
Add - Net effect of dilutive stock options and unvested restricted stock	0	450	0	428
Weighted average diluted common shares outstanding (shares)	17,365,679	18,140,109	17,641,308	18,369,170
Basic earnings per common share (usd per share)	$ 0.22	$ 0.20	$ 0.68	$ 0.44
Diluted earnings per common share (usd per share)	$ 0.22	$ 0.20	$ 0.68	$ 0.44