Condensed Consolidated Balance Sheets (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 on trade accounts receivable	$ 63	$ 73
Property and equipment, accumulated depreciation and amortization	3,819	4,265
Intangible assets, accumulated amortization	$ 12,841	$ 12,468
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	20,000,000	20,000,000
Common stock, shares issued	13,958,183	11,084,119
Common stock, shares outstanding	13,772,352	10,898,288
Treasury stock, shares	185,831	185,831