Leasing Arrangements (Tables)
12 Months Ended
Dec. 27, 2014
Leases [Abstract]  
Minimum Contractual Commitments under Long-Term Operating Leases

Minimum contractual commitments under long-term operating leases, which primarily relate to land, plant and equipment, and under royalty agreements as of December 27, 2014, are as follows:

 

     Operating
Leases
     Royalty
Agreements
 

2015

   $ 5,048       $ 3,303   

2016

     4,061         4,711   

2017

     3,223         4,973   

2018

     2,018         4,522   

2019

     1,469         4,265