SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 4) $ in Thousands	6 Months Ended
	Jun. 27, 2015 USD ($)
Components of accumulated other comprehensive income (loss)
Balance at the beginning of the period	$ (134,433)
Current-period comprehensive income (loss)	(37,075)
Balance at the end of the period	(171,508)
Foreign Currency Translation Adjustments
Components of accumulated other comprehensive income (loss)
Balance at the beginning of the period	(99,618)
Current-period comprehensive income (loss)	(38,157)
Balance at the end of the period	(137,775)
Unrealized Loss on Cash Flow Hedge
Components of accumulated other comprehensive income (loss)
Balance at the beginning of the period	3,879
Current-period comprehensive income (loss)	1,082
Balance at the end of the period	4,961
Defined Benefit Pension Plan
Components of accumulated other comprehensive income (loss)
Balance at the beginning of the period	(38,694)
Balance at the end of the period	$ (38,694)