RESTRUCTURING CHARGES AND IMPAIRMENT LOSSES (NARRATIVE) (DETAILS) (USD $)	12 Months Ended			3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Jun. 30, 2013	Jun. 30, 2012
RESTRUCTURING CHARGES AND IMPAIRMENT LOSSES [Abstract]
Description of assets subject to impairment	During each of the periods presented, the Company evaluated the recoverability of its leasehold improvement assets at certain delivery centers.
Method used to determine fair value of assets subject to impairment	To determine fair value, the Company used Level 3 inputs in its discounted cash flows analysis. Assumptions included the amount and timing of estimated future cash flows and assumed discount rates.
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 2,071,000	$ 1,353,000	$ 4,079,000
Payments	(2,632,000)	(7,161,000)
Spain [Member] | Closure of Delivery Centers [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve						400,000
Spain [Member] | Reduction in Force [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve						14,700,000
Customer Management Services [Member]
Asset Impairment [Line Items]
Impairment of leasehold improvements	400,000	100,000	1,200,000
Customer Growth Services [Member]
Asset Impairment [Line Items]
Impairment of trade name				1,800,000
Customer Strategy Services [Member]
Asset Impairment [Line Items]
Impairment of trade name					$ 1,100,000