CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Class A Common Stock	Class B Common Stock	Additional paid-in Capital	Retained Earnings
Balance at Dec. 31, 2016	$ 125,770	$ 24	$ 100	$ 55,515	$ 70,131
Net income	13,203				13,203
Cash dividends	(2,485)				(2,485)
Issuance of common stock	97			97
Balance at Dec. 31, 2017	136,585	24	100	55,612	80,849
Net income	15,325				15,325
Share conversion		100	$ (100)
Cash dividends	(2,487)				(2,487)
Issuance of common stock	139			139
Balance at Dec. 31, 2018	149,562	124		55,751	93,687
Net income	15,998				15,998
Cash dividends	(3,483)				(3,483)
Issuance of common stock	118			118
Balance at Dec. 31, 2019	$ 162,195	$ 124		$ 55,869	$ 106,202