COMMITMENTS AND CONTINGENCIES Leases and Purchase Commitments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Operating Leases, 2015 (six months)	$ 4,560		$ 4,560
Operating Leases, 2016	7,921		7,921
Operating Leases, 2017	6,773		6,773
Operating Leases, 2018	4,713		4,713
Operating Leases, 2019	2,731		2,731
Operating Leases, 2020 and thereafter	2,357		2,357
Operating Leases, Total	29,055		29,055
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Capital Leases, 2015 (six months)	181		181
Capital Leases, 2016	122		122
Capital Leases, 2017	62		62
Capital Leases, 2018	11		11
Capital Leases, 2019	0		0
Capital Leases, 2020 and thereafter	0		0
Capital Leases, Total	376		376
Operating and Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Total, 2015 (six months)	4,741		4,741
Total, 2016	8,043		8,043
Total, 2017	6,835		6,835
Total, 2018	4,724		4,724
Total, 2019	2,731		2,731
Total, 2020 and thereafter	2,357		2,357
Total	29,431		29,431
Operating Leases, Rent Expense	1,800	$ 2,000	3,700	$ 3,900
Long-term Purchase Commitment, Amount	$ 23,300		$ 23,300
Minimum
future minimum payments due [Line Items]
Capital lease interest rate	3.00%		3.00%
Maximum
future minimum payments due [Line Items]
Capital lease interest rate	7.00%		7.00%