Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Trademarks and other intangibles, accumulated amortization	$ 4,593	$ 2,886
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	28,244,000	27,486,000
Treasury stock, shares	413,000	14,000
Series A Junior Participating Preferred Stock [Member]
Finite-Lived Intangible Assets [Line Items]
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Convertible Preferred Stock [Member]
Finite-Lived Intangible Assets [Line Items]
Preferred stock, shares authorized	460,000	460,000
Preferred stock, shares issued	0	0
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ 2,414	$ 2,530