SEGMENT REPORTING (Details 2) - Consolidation Items [Domain] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Reconciliation of our segment performance measure to income (loss) before income taxes
Segment performance measure	$ 33,519	$ 34,440	$ 64,432	$ 68,689
Unallocated corporate expenses	(10,168)	(21,988)	(21,029)	(38,029)
Share-based compensation expense	(5,305)	(737)	(6,926)	(4,276)
Depreciation and software and leasehold amortization	(9,498)	(9,255)	(18,263)	(17,955)
Amortization of identifiable intangible assets	(4,810)	(3,166)	(7,495)	(6,286)
Impairment of goodwill and identifiable intangible assets	(1,162)		(1,162)
Fair value adjustment to contingent consideration	1,201		1,201	(1,142)
Other operating income (expense)	(2,861)	(496)	(2,998)	(577)
INCOME (LOSS) FROM OPERATIONS	916	(1,202)	7,760	424
Interest expense, net	(5,479)	(3,843)	(9,704)	(8,716)
LOSS BEFORE INCOME TAXES	$ (4,563)	$ (5,045)	$ (1,944)	$ (8,292)