Condensed Consolidated Statement Of Stockholders' Equity (USD $) In Thousands, except Share data	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, 2013	$ 41	$ 297,997	$ (378)	$ (81,051)	$ 42,881	$ 259,490
Balance (in shares) at Dec. 31, 2013	31,341,000					31,341,276
Proceeds from the exercise of stock options and sales of stock through the Employee Stock Purchase Plan		1,373				1,373
Proceeds from the exercise of stock options and sales of stock through the Employee Stock Purchase Plan, shares	205,000
Net tax benefit from stock option exercises and restricted stock vesting		1,965				1,965
Stock compensation related to restricted stock vesting and retirement savings plan contributions		9,433				9,433
Stock compensation related to restricted stock vesting and retirement savings plan contributions (in shares)	580,000
Purchases of treasury stock and buyback of shares for taxes				(8,350)		(8,350)
Purchases of treasury stock and buyback of shares for taxes (in shares)	(456,000)
Issuance of stock for acquisitions	2	19,902				19,904
Issuance of stock for acquisitions, shares	1,150,000
Net income					16,738	16,738
Foreign currency translation adjustment			(128)			(128)
Balance at Sep. 30, 2014	$ 43	$ 330,670	$ (506)	$ (89,401)	$ 59,619	$ 300,425
Balance (in shares) at Sep. 30, 2014	32,820,000					32,820,961