RESTRUCTURING COSTS AND ACCRUALS (Tables)

12 Months Ended

Dec. 31, 2017

Restructuring and Related Activities [Abstract]

Schedule of Restructuring and Related Costs [Table Text Block]

The following table sets forth the activity in the restructuring accruals for the years ended December 31, 2017, 2016 and 2015 (in thousands):

	Employee- Related			Facilities- Related & Other			Total
Accrual balance at January 1, 2015	58			2,285			2,343
New restructuring charges – operating expenses	5,766			—			5,766
Revisions of estimated liabilities	—			539			539
Accretion	—			226			226
Cash payments	(315		)	(1,301		)	(1,616		)
Foreign exchange impact on ending balance	—			(78		)	(78		)
Accrual balance at December 31, 2015	5,509			1,671			7,180
New restructuring charges – operating expenses	10,491			943			11,434
Revisions of estimated liabilities	(497		)	763			266
Accretion	—			287			287
Cash payments	(8,225		)	(1,701		)	(9,926		)
Non-cash write-offs	—			1,137			1,137
Foreign exchange impact on ending balance	(260		)	(7		)	(267		)
Accrual balance at December 31, 2016	7,018			3,093			10,111
New restructuring charges – operating expenses	3,095			1,526			4,621
Revisions of estimated liabilities	(1,087		)	334			(753		)
Accretion	—			325			325
Cash payments	(6,750		)	(4,252		)	(11,002		)
Non-cash write-offs	—			3,191			3,191
Foreign exchange impact on ending balance	(65		)	16			(49		)
Accrual balance at December 31, 2017	$	2,211		$	4,233		$	6,444