SEGMENT REPORTING (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Reconciliation of our segment performance measure to income before income taxes
Segment performance measure	$ 33,162	$ 36,392	$ 101,851	$ 100,066
Unallocated corporate expenses	(11,805)	(12,222)	(49,834)	(33,545)
Share-based compensation expense	(703)	(1,332)	(4,979)	(5,696)
Depreciation and software and leasehold amortization	(9,693)	(8,192)	(27,648)	(22,582)
Amortization of intangible assets	(3,184)	(4,761)	(9,470)	(14,463)
Fair value adjustment to contingent consideration			(1,142)
Loss on disposition of property and equipment			(176)	(29)
Other operating expense	(390)	855	(616)	759
INCOME FROM OPERATIONS	7,562	10,733	7,986	24,510
Interest expense, net	(3,941)	(4,099)	(12,657)	(7,930)
INCOME (LOSS) BEFORE INCOME TAXES	3,621	6,634	(4,671)	16,580
Operating segment
Reconciliation of our segment performance measure to income before income taxes
Segment performance measure	$ 33,162	$ 36,392