RESTRUCTURING COSTS AND ACCRUALS (Details) (USD $)	3 Months Ended		6 Months Ended			6 Months Ended	2 Months Ended	7 Months Ended	6 Months Ended		3 Months Ended		2 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 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	Jun. 30, 2014 Non-Acquisition-Related [Member] Employee Severance [Member]	Jun. 30, 2014 Non-Acquisition-Related [Member] Facilities-Related [Member]	Jun. 30, 2014 Facilities-Related [Member]	Jun. 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	$ 1,700,000
Restructuring accrual [Roll Forward]
Accrual balance at beginning of year			8,501,000						2,399,000	6,102,000
Restructuring Charges	(165,000)	1,918,000	(165,000)	2,191,000
Revisions of estimated liabilities			(165,000)						0	(165,000)
Accretion			344,000						0	344,000
Cash payments			(4,811,000)						(2,202,000)	(2,609,000)
Foreign exchange impact on ending balance			(5,000)						1,000	(6,000)
Accrual balance at end of period	3,864,000		3,864,000						198,000	3,666,000
Facilities-related accruals - current											1,900,000	3,700,000
Facilities-related accruals - non-current	1,762,000		1,762,000		2,335,000						1,800,000
Restructuring Plan, Estimate Revision						1,000,000
Recovery of Restructuring Expense											$ 200,000