Summary of Financial Information for Reportable Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 31, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Total net sales	$ 271,633	$ 273,054	$ 251,578	$ 165,804	$ 186,260	$ 164,585	$ 177,544	$ 165,070	$ 962,069	$ 693,459	$ 715,903
Total segment profit									228,500	148,944	165,809
Total assets	1,762,091				875,294				1,762,091	875,294	811,544
Total depreciation and amortization									83,704	38,815	37,607
Total capital expenditures									57,733	60,360	49,929
CMH
Segment Reporting Information [Line Items]
Total net sales									653,964	609,826	630,929
Total segment profit									138,379	128,910	144,758
Total assets	500,575				395,291				500,575	395,291	362,672
Total depreciation and amortization									37,455	32,797	31,612
Total capital expenditures									33,619	49,893	40,683
EM
Segment Reporting Information [Line Items]
Total net sales									308,105	83,633	84,974
Total segment profit									90,121	20,034	21,051
Total assets	804,889				46,831				804,889	46,831	41,348
Total depreciation and amortization									41,671	4,238	4,358
Total capital expenditures									19,450	6,842	5,579
Corporate
Segment Reporting Information [Line Items]
Total assets	456,627				433,172				456,627	433,172	407,524
Total depreciation and amortization									4,578	1,780	1,637
Total capital expenditures									$ 4,664	$ 3,625	$ 3,667