CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 14,253	$ 9,236	$ 7,425
Other comprehensive income (loss):
Change in unrealized income (loss) on securities available for sale	(175)	(238)	29
Tax effect	(23)	103	(12)
Total other comprehensive income (loss)	(198)	(135)	17
Comprehensive income	$ 14,055	$ 9,101	$ 7,442