Condensed Consolidated Statement of Stockholders' Equity - 6 months ended Jun. 30, 2016 - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Retained Earnings (Deficit) [Member]	Total
Balance at Dec. 31, 2015	$ 45	$ 364,786	$ (1,875)	$ (103,197)	$ 89,051	$ 348,810
Balance (in shares) at Dec. 31, 2015	34,394,000					34,394,412
Proceeds from the sales of stock through the Employee Stock Purchase Plan		105				$ 105
Proceeds from the sales of stock through the Employee Stock Purchase Plan, shares	5,000
Stock compensation related to restricted stock vesting and retirement savings plan contributions		7,314				7,314
Stock compensation related to restricted stock vesting and retirement savings plan contributions (in shares)	380,000
Purchases of treasury stock and buyback of shares for taxes				(2,427)		(2,427)
Purchases of treasury stock and buyback of shares for taxes (in shares)	(125,000)
Surrender of stock in conjunction with net working capital settlement, shares	(86,000)
Surrender of stock in conjunction with net working capital settlement				(1,499)		1,499
Issuance of stock for acquisitions		138				138
Issuance of stock for acquisitions (in shares)	8,000
Net income					11,221	11,221
Foreign currency translation adjustment			(180)			(180)
Balance at Jun. 30, 2016	$ 45	$ 372,343	$ (2,055)	$ (107,123)	$ 100,272	$ 363,482
Balance (in shares) at Jun. 30, 2016	34,576,000					34,576,156