Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Allowance for doubtful accounts receivable, current	$ 633	$ 350
Accumulated depreciation on property and equipment	27,735	25,062
Accumulated amortization on intangible assets	$ 7,556	$ 4,744
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	1,029,072	985,714
Common stock, shares outstanding	912,754	869,396
Treasury stock, shares	116,318	116,318