ACQUISITIONS (ASSETS ACQUIRED TABLE) (DETAILS) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Nov. 09, 2016	Aug. 08, 2014
Business Acquisition [Line Items]
Total deferred tax assets, net	$ 47,100
Goodwill	129,765	$ 129,648
Accrued employee compensation and benefits	$ 78,689	$ 66,133
Atelka [Member]
Business Acquisition [Line Items]
Cash			$ 2,655
Accounts receivable.			18,320
Other assets			615
Property, plant and equipment.			3,161
Total deferred tax assets, net			583
Customer relationships			10,500
Goodwill			20,443
Total assets acquired			56,277
Accounts payable			1,199
Accrued employee compensation and benefits			2,418
Accrued expenses			2,597
Other			1,678
Total liabilities assumed			7,892
Total purchase price			$ 48,385
rogenSi [Member]
Business Acquisition [Line Items]
Total purchase price				$ 34,400