CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 2,919	$ 2,447
Preferred stock, par value (in dollars per share)	$ 0.10	$ 0.10
Preferred stock, authorized shares (in shares)	3,000,000	3,000,000
Preferred stock, issued shares (in shares)	3,500	0
Preferred stock, outstanding shares (in shares)	3,500	0
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, authorized shares (in shares)	30,000,000	30,000,000
Common stock, issued shares (in shares)	17,630,801	12,169,536
Common stock, outstanding shares (in shares)	17,630,801	12,169,536