Consolidated Statements of Comprehensive Income - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income	$ 15,512,000	$ 13,992,000	$ 8,189,000
Other comprehensive income (loss):
Change in net unrealized gain (loss)	5,887,000	(2,062,000)	687,000
Less: reclassification adjustments for net (gain) losses included in net income	(114,000)	8,000	158,000
Net unrealized holding gain (loss)	5,773,000	(2,054,000)	845,000
Related income tax effect:
Change in unrealized (gain) loss	(1,741,000)	609,000	(284,000)
Reclassification of gain (losses) included in net income	34,000	(2,000)	(65,000)
Income tax effect	(1,707,000)	607,000	(349,000)
Total other comprehensive income (loss)	4,066,000	(1,447,000)	496,000
Comprehensive income	$ 19,578,000	$ 12,545,000	$ 8,685,000