Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 1,237	$ 1,071
Inventories reserves	$ 166	$ 291
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)	19,499,220	19,465,877
Common stock, shares outstanding (in shares)	19,465,753	19,432,410
Treasury stock, shares (in shares)	33,467	33,467