ACQUISITIONS (Details 2) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended
	Mar. 31, 2015	Jun. 30, 2015	Sep. 30, 2015	Jul. 10, 2015	Dec. 31, 2014	Oct. 31, 2014	Jun. 06, 2014	Apr. 30, 2014	Mar. 05, 2014
Business Acquisition [Line Items]
Goodwill			$ 84,229		$ 57,417
2015 Acquisitions | NavigationArts | As Originally Reported [Member]
Business Acquisition [Line Items]
Cash and cash equivalents				$ 1,317
Trade receivables and other current assets				3,920
Property and equipment and other long-term assets				230
Deferred tax asset				0
Acquired intangible assets				1,500
Goodwill				23,822
Total assets acquired				30,789
Accounts payable and accrued expenses				871
Deferred revenue				50
Due to employees				596
Deferred tax liability				525
Total liabilities assumed				2,042
Net assets acquired				$ 28,747
2014 Acquisitions | Netsoft
Business Acquisition [Line Items]
Cash and cash equivalents	$ 0
Trade receivables and other current assets	788
Property and equipment and other long-term assets	52
Deferred tax asset	0
Acquired intangible assets	1,700
Goodwill	2,779
Total assets acquired	5,319
Accounts payable and accrued expenses	69
Deferred revenue	0
Due to employees	0
Deferred tax liability	0
Total liabilities assumed	69
Net assets acquired	5,250
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments [Abstract]
Adjustment to net assets acquired	$ (348)
2014 Acquisitions | Netsoft | As Originally Reported [Member]
Business Acquisition [Line Items]
Cash and cash equivalents									$ 0
Trade receivables and other current assets									788
Property and equipment and other long-term assets									52
Deferred tax asset									351
Acquired intangible assets									1,700
Goodwill									2,776
Total assets acquired									5,667
Accounts payable and accrued expenses									69
Deferred revenue									0
Due to employees									0
Deferred tax liability									0
Total liabilities assumed									69
Net assets acquired									$ 5,598
2014 Acquisitions | Jointech
Business Acquisition [Line Items]
Cash and cash equivalents		$ 871
Trade receivables and other current assets		784
Property and equipment and other long-term assets		338
Deferred tax asset		0
Acquired intangible assets		15,312
Goodwill		23,758
Total assets acquired		41,063
Accounts payable and accrued expenses		728
Deferred revenue		0
Due to employees		1,254
Deferred tax liability		2,293
Total liabilities assumed		4,275
Net assets acquired		36,788
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments [Abstract]
Adjustment to net assets acquired		0
2014 Acquisitions | Jointech | As Originally Reported [Member]
Business Acquisition [Line Items]
Cash and cash equivalents								$ 871
Trade receivables and other current assets								784
Property and equipment and other long-term assets								338
Deferred tax asset								0
Acquired intangible assets								25,744
Goodwill								11,033
Total assets acquired								38,770
Accounts payable and accrued expenses								728
Deferred revenue								0
Due to employees								1,254
Deferred tax liability								0
Total liabilities assumed								1,982
Net assets acquired								$ 36,788
2014 Acquisitions | GGA
Business Acquisition [Line Items]
Cash and cash equivalents		0
Trade receivables and other current assets		5,377
Property and equipment and other long-term assets		306
Deferred tax asset		0
Acquired intangible assets		16,000
Goodwill		7,306
Total assets acquired		28,989
Accounts payable and accrued expenses		2,593
Deferred revenue		104
Due to employees		0
Deferred tax liability		0
Total liabilities assumed		2,697
Net assets acquired		26,292
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments [Abstract]
Adjustment to net assets acquired		$ (1,366)
2014 Acquisitions | GGA | As Originally Reported [Member]
Business Acquisition [Line Items]
Cash and cash equivalents							$ 0
Trade receivables and other current assets							5,157
Property and equipment and other long-term assets							444
Deferred tax asset							4,463
Acquired intangible assets							10,959
Goodwill							6,496
Total assets acquired							27,519
Accounts payable and accrued expenses							2,593
Deferred revenue							0
Due to employees							0
Deferred tax liability							0
Total liabilities assumed							2,593
Net assets acquired							$ 24,926
2014 Acquisitions | Great Fridays Limited
Business Acquisition [Line Items]
Cash and cash equivalents			259
Trade receivables and other current assets			1,825
Property and equipment and other long-term assets			262
Deferred tax asset			0
Acquired intangible assets			200
Goodwill			11,327
Total assets acquired			13,873
Accounts payable and accrued expenses			872
Deferred revenue			317
Due to employees			624
Deferred tax liability			110
Total liabilities assumed			1,923
Net assets acquired			11,950
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments [Abstract]
Adjustment to net assets acquired			(77)
2014 Acquisitions | Great Fridays Limited | As Originally Reported [Member]
Business Acquisition [Line Items]
Cash and cash equivalents						$ 259
Trade receivables and other current assets						1,825
Property and equipment and other long-term assets						262
Deferred tax asset						0
Acquired intangible assets						5,747
Goodwill						6,947
Total assets acquired						15,040
Accounts payable and accrued expenses						872
Deferred revenue						317
Due to employees						624
Deferred tax liability						1,200
Total liabilities assumed						3,013
Net assets acquired						$ 12,027
2014 Acquisitions | Total
Business Acquisition [Line Items]
Cash and cash equivalents			1,130
Trade receivables and other current assets			8,774
Property and equipment and other long-term assets			958
Deferred tax asset			0
Acquired intangible assets			33,212
Goodwill			45,170
Total assets acquired			89,244
Accounts payable and accrued expenses			4,262
Deferred revenue			421
Due to employees			1,878
Deferred tax liability			2,403
Total liabilities assumed			8,964
Net assets acquired			80,280
2014 Acquisitions | Total | As Originally Reported [Member]
Business Acquisition [Line Items]
Cash and cash equivalents			1,130
Trade receivables and other current assets			8,554
Property and equipment and other long-term assets			1,096
Deferred tax asset			4,814
Acquired intangible assets			44,150
Goodwill			27,252
Total assets acquired			86,996
Accounts payable and accrued expenses			4,262
Deferred revenue			317
Due to employees			1,878
Deferred tax liability			1,200
Total liabilities assumed			7,657
Net assets acquired			$ 79,339