Unaudited Quarterly Financial Information (Details) (USD $)	3 Months Ended									12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Mar. 31, 2002	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Unaudited Quarterly Financial Information
Revenues	$ 103,610,000	$ 93,818,000	$ 96,336,000	$ 92,849,000	$ 108,301,000	$ 84,594,000	$ 67,852,000	$ 63,510,000		$ 386,613,000	$ 324,257,000	$ 241,328,000
Gross profit	69,390,000	59,121,000	60,955,000	59,869,000	76,345,000	56,302,000	44,917,000	41,996,000
Acquisition and integration	2,957,000	1,379,000	2,707,000	1,470,000	1,343,000	10,571,000	3,195,000	10,000		8,513,000	15,119,000	269,000
Goodwill impairment	11,427,000	208,166,000							131,300,000	219,593,000
Income (loss) from continuing operations	(20,825,000)	(219,727,000)	518,000	1,279,000	5,848,000	(2,697,000)	10,498,000	12,888,000		(238,755,000)	26,537,000	45,302,000
Loss from discontinued operations			(789,000)	(291,000)	(1,425,000)	(134,000)	(285,000)	(209,000)		(1,080,000)	(2,053,000)	(3,733,000)
Net income (loss)	(20,825,000)	(219,727,000)	(271,000)	988,000	4,423,000	(2,831,000)	10,213,000	12,679,000		(239,835,000)	24,484,000	41,569,000
Basic net income (loss) per common share:
Continuing (in dollars per share)	$ (0.75)	$ (7.96)	$ 0.02	$ 0.05	$ 0.21	$ (0.10)	$ 0.38	$ 0.46		$ (8.69)	$ 0.96	$ 1.65
Discontinued (in dollars per share)			$ (0.03)	$ (0.01)	$ (0.05)		$ (0.01)	$ (0.01)		$ (0.04)	$ (0.07)	$ (0.13)
Total (in dollars per share)	$ (0.75)	$ (7.96)	$ (0.01)	$ 0.04	$ 0.16	$ (0.10)	$ 0.37	$ 0.45		$ (8.73)	$ 0.89	$ 1.52
Diluted net income (loss) per common share:
Continuing (in dollars per share)	$ (0.75)	$ (7.96)	$ 0.02	$ 0.05	$ 0.21	$ (0.10)	$ 0.38	$ 0.46		$ (8.69)	$ 0.95	$ 1.63
Discontinued (in dollars per share)			$ (0.03)	$ (0.01)	$ (0.05)		$ (0.01)	$ (0.01)		$ (0.04)	$ (0.07)	$ (0.13)
Total (in dollars per share)	$ (0.75)	$ (7.96)	$ (0.01)	$ 0.04	$ 0.16	$ (0.10)	$ 0.37	$ 0.45		$ (8.73)	$ 0.88	$ 1.50
Credit for reversal of an earnout liability related to Match Point					900,000
Impairment of Springbox unit					$ 1,800,000