Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 27, 2014		Dec. 28, 2013		Dec. 29, 2012
Net income	$ 99,418		$ 88,784		$ 75,332
Other comprehensive income (loss):
Pension liability adjustments (net of tax of $6,308, ($5,270) and $4,633, respectively)	(12,475)	[1],[2]	3,739	[1],[2]	(7,301)	[2]
Unrealized gain on investments	1,398	[2],[3]	1,526	[2],[3]	1,225	[2]
Foreign currency translation adjustments	(30,466)		(1,396)		13,993
Comprehensive income	$ 57,875		$ 92,653		$ 83,249

[1] Net of tax of $12,587, $6,549, and $11,819 for 2014, 2013 and 2012, respectively.

[2] Including related tax impact (see Note 14).

[3] Net of tax of $0, $0 and $0 for 2014, 2013 and 2012, respectively.