Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Accounts receivable, net of allowances	$ 3,372	$ 2,957
Property and equipment, net of accumulated depreciation	$ 38,149	$ 30,869
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000	100,000
Common stock, shares issued	37,908	37,564
Common stock, shares outstanding	37,908	37,564