Other Expense (Income), Net (Table) (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Oct. 03, 2015		Oct. 04, 2014		Oct. 03, 2015		Oct. 04, 2014
Other Income And Expenses [Abstract]
Severance and other rationalization costs	$ 2,359	[1]	$ 243		$ 3,413	[1]	$ 429
Acquisition-related transaction costs	1,135	[2]	0		1,658	[2]	0
Plant Closure Costs	107	[3]	0		392	[3]	0
Gain (loss) on sale of assets	126		(1,018)		19		(1,018)
Impairment of long-lived assets	0		505	[4]	0		505	[4]
Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability 1	156		0		238		(1,373)	[5]
Other	150		281		445		464
Total Other Expense, net	$ 4,033		$ 11		$ 6,165		$ (993)

[1] (1) Severance costs For the quarter ended October 3, 2015 , employee severance costs included contractual severance benefits of $1,227 and previously unrecognized stock-based compensation expense of $854 recognized in connection with the departure of Steven Bromley as the Company’s Chief Executive Officer (“CEO”) effective October 1, 2015. For the three quarters ended October 3, 2015 , employee severance costs also included those costs related to the departure of the former President and CEO of Opta Minerals effective May 26, 2015. For the quarter and three quarters ended October 4, 2014 , employee severance costs included costs incurred by the Company in connection with the closure and sale of certain of its sunflower facilities.

[2] (2) Business development costs Business development costs represent exter nal professional and consulting fees , and other costs incurred in connection with the review of strategic opportunities to acquire or divest of businesses or assets. For the quarter and three quarters ended October 3, 2015 , these costs were primarily incurred in connection wi th the agreement to acquire Sunrise (see note 16 ), as well as the acquisitions of the Citrusource and Niagara Natural (see note 2 ).

[3] (3) Plant closure costs For the quarter and three quarters ended October 3, 2015 , Opta Minerals incurred direct costs in connection with the closure or relocation of certain of its abrasives plants.

[4] Impairment of long- lived assets For the quarter and three quarters ended October 4, 2014 , Opta Minerals wrote down the carrying value of certain property, plant and equipment in connection with the closure of one of its industrial minerals plants.

[5] Fair value of contingent consideration For the three quarters ended October 4, 2014 , the Company recorded a gain of $1,373 in connection with the settlement of the remaining earn-out related to the acquisition of Edner of Nevada, Inc. (“ Edner ”) on December 14, 2010 . In addition, the Company made a payment of $800 to the former owners of E dner in connection with this settlement.