SUBSEQUENT EVENTS (Details) (USD $)	3 Months Ended		9 Months Ended					3 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Nov. 02, 2011	Dec. 31, 2010	Dec. 31, 2009	Sep. 30, 2011 Sendori	Jun. 30, 2011 Sendori	Mar. 31, 2011 Sendori	Dec. 31, 2010 Sendori	Sep. 30, 2010 Sendori	Jun. 30, 2010 Sendori	Mar. 31, 2010 Sendori	Nov. 02, 2011 Quarterly cash dividend declared Common stock	Nov. 02, 2011 Quarterly cash dividend declared Class B convertible common stock	Mar. 11, 2011 Agreement to sell Sendori
SUBSEQUENT EVENTS
Quarterly cash dividend (per share)															$ 0.12	$ 0.12
Total consideration of agreement to sell Sendori																	$ 3,000,000
Amount contingent upon collection of outstanding accounts receivable																	2,300,000
Current assets	1,124,141,000		1,124,141,000			1,543,985,000		4,000,000
Total current liabilities	493,278,000		493,278,000			356,873,000		1,800,000
Noncontrolling interest	19,095,000		19,095,000			59,869,000	28,180,000	2,400,000
Revenue and reconciliation of operating income (loss) to Operating Income Before Amortization
Revenue	516,884,000	412,966,000	1,462,501,000	1,185,388,000				5,277,000	6,982,000	9,239,000	9,984,000	9,903,000	6,907,000	9,682,000
Operating (loss) income	46,740,000	37,684,000	142,307,000	71,242,000				(6,064,000)	(770,000)	14,000	(434,000)	348,000	(758,000)	(69,000)
Amortization of intangibles	4,538,000	2,302,000	9,195,000	10,232,000				767,000	183,000	183,000	183,000	183,000	183,000	183,000
Non-cash compensation expense	22,885,000	17,058,000	66,053,000	59,651,000							39,000	59,000	88,000	147,000
Operating Income Before Amortization	74,163,000	57,044,000	217,555,000	141,125,000				(5,297,000)	(587,000)	197,000	(212,000)	590,000	(487,000)	261,000
Write-down of capitalized software costs								4,900,000
Intangible asset impairment charge								600,000
Common stock dividend payable					$ 10,000,000