Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Allowance for accounts receivable	$ 1,847	$ 1,364
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	3,818,000	3,803,000
Common stock, shares outstanding (in shares)	3,650,000	3,803,000
Treasury stock, at cost (in shares)	168,000	0