Shareholders' Equity - Summary of Common Shares Outstanding (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 28, 2015	Jun. 30, 2016	Jun. 28, 2015
Roll forward of common shares outstanding
Balance at the beginning of the year	32,548,477	33,392,060	32,548,477
Repurchases	0	(626,882)	0	(164,852)
Restricted share issuances	210,484	133,353
Balance at the end of the period	32,758,961	32,903,731	32,758,961	32,903,731