SUBSEQUENT EVENTS - Narrative (Details)			3 Months Ended
	Apr. 01, 2016	Jul. 14, 2015 USD ($) shares	Jun. 30, 2015 USD ($)	Jul. 13, 2015 $ / shares	Oct. 12, 2014 USD ($) board_member	Nov. 22, 2011 USD ($)
Business Acquisition [Line Items]
Base rent, first year					$ 984,000
Base rent, second year					984,000
Base rent, third year					$ 3,000,000
Credit facility						$ 300,000,000
Maximum
Business Acquisition [Line Items]
Leverage ratio						1.00
Minimum
Business Acquisition [Line Items]
Leverage ratio						2.50
Communications Business
Business Acquisition [Line Items]
Acquisition related costs			$ 3,400,000
Danaher | Communications Business | Member of board of directors
Business Acquisition [Line Items]
Number of board members designated by Danaher | board_member					1
Subsequent Event | Maximum
Business Acquisition [Line Items]
Leverage ratio		2.50
Subsequent Event | Maximum | Forecast
Business Acquisition [Line Items]
Leverage ratio	2.50
Subsequent Event | Minimum
Business Acquisition [Line Items]
Leverage ratio		1.00
Subsequent Event | Minimum | Forecast
Business Acquisition [Line Items]
Leverage ratio	1.00
Subsequent Event | Common Stock Repurchase Plan
Business Acquisition [Line Items]
Stock authorized to repurchase under stock repurchase program (in shares) | shares		20,000,000
Subsequent Event | Senior secured revolving credit facility | Line of credit
Business Acquisition [Line Items]
Credit facility		$ 800,000,000
Amount drawn against credit facility		$ 250,000,000
Commitment fee percentage		0.20%
Debt default, acceleration clause, required consent percentage		50.00%
Subsequent Event | Senior secured revolving credit facility | Line of credit | Maximum | Foreign Subsidiaries
Business Acquisition [Line Items]
Voting stock pledge limit for any foreign subsidiary		65.00%
Subsequent Event | Senior secured revolving credit facility | Line of credit | Maximum | Forecast
Business Acquisition [Line Items]
Commitment fee percentage	0.35%
Subsequent Event | Senior secured revolving credit facility | Line of credit | Minimum | Forecast
Business Acquisition [Line Items]
Commitment fee percentage	0.20%
Subsequent Event | Senior secured revolving credit facility | Line of credit | Federal funds effective rate
Business Acquisition [Line Items]
Variable interest rate		0.50%
Subsequent Event | Senior secured revolving credit facility | Line of credit | LIBOR
Business Acquisition [Line Items]
Variable interest rate		1.00%
Subsequent Event | Senior secured revolving credit facility | Line of credit | LIBOR | LIBOR loans
Business Acquisition [Line Items]
Variable interest rate		1.75%
Subsequent Event | Senior secured revolving credit facility | Line of credit | LIBOR | LIBOR loans | Maximum
Business Acquisition [Line Items]
Variable interest rate		2.00%
Subsequent Event | Senior secured revolving credit facility | Line of credit | LIBOR | LIBOR loans | Minimum
Business Acquisition [Line Items]
Variable interest rate		1.25%
Subsequent Event | Senior secured revolving credit facility | Line of credit | Base rate | Base rate loans
Business Acquisition [Line Items]
Variable interest rate		0.75%
Subsequent Event | Senior secured revolving credit facility | Line of credit | Base rate | Base rate loans | Maximum
Business Acquisition [Line Items]
Variable interest rate		1.00%
Subsequent Event | Senior secured revolving credit facility | Line of credit | Base rate | Base rate loans | Minimum
Business Acquisition [Line Items]
Variable interest rate		0.25%
Subsequent Event | Letter of credit sub-facility | Line of credit
Business Acquisition [Line Items]
Credit facility		$ 50,000,000
Subsequent Event | Communications Business
Business Acquisition [Line Items]
Total equity consideration		2,305,612,000
Transaction fee		11,000,000
Amount payable contingent upon consummation of Mergers		$ 9,500,000
Subsequent Event | Common stock
Business Acquisition [Line Items]
Share price (in dollars per share) | $ / shares				$ 36.89
Subsequent Event | Common stock | Newco | Communications Business
Business Acquisition [Line Items]
Shares issued in business acquisition (in shares) | shares		62,500,000