RESTRUCTURING COSTS AND ACCRUALS (Details) (USD $)	3 Months Ended		9 Months Ended			9 Months Ended	2 Months Ended	7 Months Ended	9 Months Ended		3 Months Ended		2 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Sep. 30, 2013 Restructuring Plan 2012 [Member]	Dec. 31, 2013 Employee Severance [Member] Non-Acquisition-Related [Member] Restructuring Plan 2013 [Member]	Dec. 31, 2013 Employee Severance [Member] Non-Acquisition-Related [Member] Restructuring Plan 2013 [Member] position	Sep. 30, 2014 Non-Acquisition-Related [Member] Employee Severance [Member]	Sep. 30, 2014 Non-Acquisition-Related [Member] Facilities-Related [Member]	Sep. 30, 2014 Facilities-Related [Member]	Sep. 30, 2014 Facilities-Related [Member] Restructuring Plan 2008 [Member]	Dec. 31, 2013 Hardware Shared Services Group [Member] Employee Severance [Member] Non-Acquisition-Related [Member] Restructuring Plan 2013 [Member] position	Dec. 31, 2013 Supply and Technology Group [Member] Employee Severance [Member] Non-Acquisition-Related [Member] Restructuring Plan 2013 [Member] position
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated								31					29	15
Severance costs							$ 1,700,000	$ 1,400,000
Restructuring accrual [Roll Forward]
Accrual balance at beginning of year			8,501,000						2,399,000	6,102,000
Restructuring Charges	0	688,000	(165,000)	2,879,000
Revisions of estimated liabilities			(165,000)						0	(165,000)
Accretion			517,000						0	517,000
Cash payments			(6,085,000)						(2,290,000)	(3,795,000)
Foreign exchange impact on ending balance			(46,000)						(1,000)	(45,000)
Accrual balance at end of period	2,722,000		2,722,000						108,000	2,614,000
Facilities-related accruals - current											1,200,000	2,700,000
Facilities-related accruals - non-current	1,448,000		1,448,000		2,335,000						1,400,000
Restructuring Plan, Estimate Revision						1,400,000
Recovery of Restructuring Expense											$ 200,000