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]
Allowance for doubtful accounts	$ 1,427	$ 1,705
Property and equipment, accumulated depreciation	37,690	36,456
Intangible assets, accumulated amortization	$ 2,471	$ 2,005
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	17,062,241	16,936,128
Common stock, shares outstanding	15,403,250	15,277,137
Treasury stock, shares outstanding	1,658,991	1,658,991