CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 28, 2013		Sep. 29, 2012		Sep. 28, 2013		Sep. 29, 2012
Net sales	$ 360,013	[1]	$ 257,699	[1]	$ 1,051,265	[1]	$ 746,562	[1]
Cost of sales	218,575		157,254		651,985		456,818
Gross profit	141,438		100,445		399,280		289,744
Selling and distribution expenses	41,769		25,965		116,559		79,414
General and administrative expenses	32,181		27,051		112,713		80,903
Income from operations	67,488	[1]	47,429	[1]	170,008		129,427
Net interest expense and deferred financing amortization, net	4,249		2,988		11,729		7,046
Other (income) expense, net	1,394		2,765		1,998		3,652
Earnings before income taxes	61,845		41,676		156,281		118,729
Provision for income taxes	20,903		11,907		52,274		35,820
Net earnings	40,942		29,769		104,007		82,909
Net earnings per share:
Basic (in usd per share)	$ 2.19		$ 1.63		$ 5.60		$ 4.55
Diluted (in usd per share)	$ 2.18		$ 1.60		$ 5.58		$ 4.47
Weighted average number of shares
Basic (in shares)	18,726		18,296		18,569		18,237
Dilutive common stock equivalents (in shares)	16	[2]	284	[2]	86	[2]	302	[2]
Diluted (in shares)	18,742		18,580		18,655		18,539
Comprehensive income	$ 47,123		$ 35,956		$ 103,375		$ 87,642

[1] Non-operating expenses are not allocated to the operating segments. Non-operating expenses consist of interest expense and deferred financing amortization, foreign exchange gains and losses and other income and expense items outside of income from operations.

[2] There were no anti-dilutive equity awards excluded from common stock equivalents for any period presented.