Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 1,071	$ 585
Inventories reserves	$ 291	$ 298
Preferred stock, par value (in USD per share)	$ 1.00	$ 1.00
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in USD per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	35,000,000	35,000,000
Common stock, shares issued (in shares)	19,465,877	19,294,296
Common stock, shares outstanding (in shares)	19,432,410	19,260,829
Treasury stock, shares (in shares)	33,467	33,467