Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Other Comprehensive Loss	Retained Earnings	Total
Beginning balance at Dec. 31, 2017	$ 51	$ 5,719	$ (102)	$ (19)	$ 11,556	$ 17,205
Net unrealized holding gain (loss)				(13)		(13)
Proceeds from options exercised		12				12
Vesting of restricted stock		186				186
Net income					270	270
Ending balance at Jun. 30, 2018	51	5,917	(102)	(32)	11,826	17,660
Beginning balance at Dec. 31, 2018	51	5,973	(102)	(37)	12,962	18,847
Net unrealized holding gain (loss)				25		25
Proceeds from options exercised						0
Vesting of restricted stock	1	153				154
Net income					604	604
Ending balance at Jun. 30, 2019	$ 52	$ 6,126	$ (102)	$ (12)	$ 13,566	$ 19,630