Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other comprehensive income, tax expense (benefit)	$ 319	$ (217)	$ (305)
Income tax expense	$ 655	$ 585	$ 1,185
Stock options exercised	17,773		505
ESOP, shares earned	7,935	7,935	7,935
Compensation plan shares granted	5,186	5,329	27,348
Compensation plan shares forfeited	860	10,433	1,104
Compensation plan shares earned	19,814	28,315	27,909
Purchase of treasury stock, shares	93,424	88,555	17,100
Cash dividends declared, value per share	$ 0.48	$ 0.40	$ 0.32
Accounting Standards Update 2016-02 [Member]
Income tax expense	$ 2