Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Trade and other accounts receivable, allowance	$ 150	$ 134
Common stock, par value	$ 0.10	$ 0.1000
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	29,930,000	29,563,000
Common stock, shares outstanding	29,930,000	29,563,000