ACQUISITIONS (Purchase Price and Estimated Fair Values) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Aug. 31, 2015	Jan. 02, 2015	Dec. 31, 2014
Assets Acquired
Goodwill	$ 91,849			$ 80,599
Cambridge Semiconductor Limited [Member]
Assets Acquired
Cash			$ 1,134
Accounts receivable			1,891
Inventories			1,409
Prepaid expenses and other current assets			408
Tax receivable			1,093
Intangible assets			9,020
Goodwill			11,250
Total assets acquired			26,205
Liabilities Assumed
Current liabilities			1,832
Taxes payable			1,090
Total liabilities assumed			2,922
Total purchase price			23,283
Cambridge Semiconductor Limited [Member] | Developed technology [Member]
Assets Acquired
Intangible assets			6,600
Cambridge Semiconductor Limited [Member] | Customer relationships [Member]
Assets Acquired
Intangible assets			$ 2,420
Building [Member]
Assets Acquired
Intangible assets		$ 700
Liabilities Assumed
Total liabilities assumed		$ 100