Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Trade and other accounts receivable, allowance	$ 319	$ 252
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	80,000,000	40,000,000
Common stock, shares issued	32,082,000	31,782,000
Common stock, shares outstanding	32,082,000	31,782,000