Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Statement Of Financial Position [Abstract]
Allowance for loan losses	$ 13,411	$ 13,281
Common stock, par value	$ 0.01	$ 0.01
Common stock, Authorized	20,000,000	20,000,000
Common stock, shares Issued	8,498,491	8,603,462
Common stock, shares outstanding	8,498,491	8,603,462