ACQUISITIONS (ASSETS ACQUIRED TABLE) (DETAILS) - USD ($) $ in Thousands	Jun. 30, 2017	Apr. 03, 2017	Dec. 31, 2016	Nov. 09, 2016	Aug. 08, 2014
Business Acquisition [Line Items]
Total deferred tax assets, net	$ 33,000
Goodwill	166,874		$ 129,648
Accrued employee compensation and benefits	$ 81,544		$ 66,133
Connextions [Member]
Business Acquisition [Line Items]
Accounts receivable.		$ 15,959
Prepaid Expenses		241
Other assets		51
Property, plant and equipment.		7,594
Customer relationships		32,500
Goodwill		36,772
Total assets acquired		93,117
Accounts payable		1
Accrued employee compensation and benefits		346
Accrued expenses		386
Deferred tax liabilities		14,273
Deferred revenue.		399
Total liabilities assumed		15,405
Total purchase price		$ 77,712
Atelka [Member]
Business Acquisition [Line Items]
Cash				$ 2,655
Accounts receivable.				18,449
Prepaid Expenses				615
Property, plant and equipment.				3,161
Total deferred tax assets, net				583
Customer relationships				10,500
Goodwill				20,330
Total assets acquired				56,293
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				$ 48,401
rogenSi [Member]
Business Acquisition [Line Items]
Total purchase price					$ 34,400