BUSINESS COMBINATIONS (Details) (USD $)	12 Months Ended			1 Months Ended	12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		1 Months Ended		12 Months Ended
	Dec. 31, 2011 Y	Dec. 31, 2010	Dec. 31, 2009	Oct. 31, 2011 Advanced Digital Design S.A M	Dec. 31, 2011 Advanced Digital Design S.A Period	Oct. 06, 2011 Advanced Digital Design S.A	Dec. 31, 2011 Advanced Digital Design S.A Customer Relationships Y	Oct. 06, 2011 Advanced Digital Design S.A Customer Relationships	Dec. 31, 2011 Advanced Digital Design S.A Developed Technology Y	Oct. 06, 2011 Advanced Digital Design S.A Developed Technology	Dec. 31, 2011 Advanced Digital Design S.A Tradename Y	Oct. 06, 2011 Advanced Digital Design S.A Tradename	Dec. 31, 2011 Advanced Digital Design S.A Non-Compete Agreement Y	Oct. 06, 2011 Advanced Digital Design S.A Non-Compete Agreement	Dec. 31, 2011 Advanced Digital Design S.A Backlog Y	Oct. 06, 2011 Advanced Digital Design S.A Backlog	Mar. 31, 2010 Quantum Research Group Ltd.	Mar. 31, 2008 Quantum Research Group Ltd. Y	Dec. 31, 2011 Quantum Research Group Ltd.	Dec. 31, 2010 Quantum Research Group Ltd.	Dec. 31, 2009 Quantum Research Group Ltd.	Dec. 31, 2011 Quantum Research Group Ltd. Customer Relationships Y	Dec. 31, 2010 Quantum Research Group Ltd. Customer Relationships Y	Dec. 31, 2011 Quantum Research Group Ltd. Developed Technology Y	Dec. 31, 2010 Quantum Research Group Ltd. Developed Technology Y	Dec. 31, 2011 Quantum Research Group Ltd. Tradename Y	Dec. 31, 2010 Quantum Research Group Ltd. Tradename Y	Dec. 31, 2011 Quantum Research Group Ltd. Non-Compete Agreement Y	Dec. 31, 2010 Quantum Research Group Ltd. Non-Compete Agreement Y	Dec. 31, 2011 Quantum Research Group Ltd. Backlog Y	Dec. 31, 2010 Quantum Research Group Ltd. Backlog Y
Business acquisition
Amount placed in an escrow account relating to deferred consideration						$ 4,500,000
Number of contingent consideration periods				2	2
First period in which amount will be released from an escrow deposit (in months)				18
Second period in which amount will be released from an escrow deposit (in months)				36
Eligible earnout amount based on achieving certain revenue targets and continuing employment					12,100,000
Fair value of the earnout recorded from the acquisition					1,100,000
Purchase price allocation as of the closing date of acquisition
Cash paid for acquisition						19,915,000
Less:
Net tangible liabilities assumed						4,879,000
Intangible assets acquired:								(6,580,000)		(3,330,000)		(150,000)		(720,000)		(290,000)
Intangible assets acquired and net tangible liabilities assumed, net						(6,191,000)
Goodwill						13,724,000
Amount of goodwill reduced, related to deferred tax assets	1,300,000
Components of the identifiable intangible assets subject to amortization
Gross Value					11,070,000		6,580,000		3,330,000		150,000		720,000		290,000				22,413,000	22,413,000		15,427,000	15,427,000	4,948,000	4,948,000	849,000	849,000	806,000	806,000	383,000	383,000
Accumulated Amortization					(375,000)		(110,000)		(119,000)		(13,000)		(60,000)		(73,000)				(17,658,000)	(13,466,000)		(11,827,000)	(8,742,000)	(3,793,000)	(2,804,000)	(849,000)	(849,000)	(806,000)	(688,000)	(383,000)	(383,000)
Total intangible assets, net	20,594,000	17,603,000			10,695,000		6,470,000		3,211,000		137,000		660,000		217,000				4,755,000	8,947,000		3,600,000	6,685,000	1,155,000	2,144,000				118,000
Estimated Useful Life (in years)							15		7		3		3		1							5	5	5	5	3	3	5	5
Estimated Useful Life, maximum (in years)	5																													1	1
Components of acquisition-related charges
Amortization of intangible assets					375,000														4,192,000	4,466,000	4,917,000
Compensation-related expense - cash					944,000															199,000	3,871,000
Compensation-related expense - stock																			(103,000)	(3,065,000)	7,561,000
Total acquisition-related charges	5,408,000	1,600,000	16,349,000		1,319,000														4,089,000	1,600,000	16,349,000
Compensation related to key employee consideration, accelerated					400,000
Transaction costs incurred					700,000
Goodwill	67,662,000	54,676,000																	54,300,000	54,700,000
Period over which agreed compensation will be paid to former key executives (in years)																		3
Compensation payable in cash to former key executives, maximum																		15,100,000
Compensation payable in stock to former key executives (in shares)																		5,300,000
Value of compensation payable in stock to former key executives																		17,300,000
Common stock issued to former key executives (in shares)																	3,200,000
Common stock forfeited due to change in employment status of former key executives (in shares)																	2,200,000
Amount of credit recorded for the reversal of the expenses previously recorded due to the graded vesting recognition methodology																				4,500,000
Cash payments made to former key executives																				$ 3,800,000	$ 10,700,000