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Borrowings - Additional Information (Detail) - USD ($)			1 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended
Borrowings - Additional Information (Detail) - USD ($)	Jul. 29, 2015	Jun. 01, 2015	May. 21, 2014	Jun. 28, 2015	Jun. 28, 2015	Dec. 31, 2013	Dec. 31, 2014	Jun. 29, 2014
Debt Instrument [Line Items]
Debt instrument, stated interest rate				3.875%	3.875%			3.875%
Proceeds from securitization		$ 12,100,000
Total long-term debt				$ 1,111,991,000	$ 1,111,991,000		$ 1,068,401,000
Line of credit facility interest rate				1.94%
Revolving Credit Facility
Debt Instrument [Line Items]
Proceeds from lines of credit		$ 246,000,000
Revolving Credit Facility \| Subsequent Event
Debt Instrument [Line Items]
Repayment of lines of credit	$ 50,000,000
Convertible Senior Subordinated Notes
Debt Instrument [Line Items]
Number of trading period					20 days
Number of consecutive trading period					30 days
Threshold percentage of stock price trigger					130.00%
Number of business period					5 days
Principal amount of convertible notes					$ 1,000
Percentage of product of last reported sale price of common stock					98.00%
Conversion ratio					16.3084
Conversion price, per share				$ 61.32	$ 61.32
3.875% Convertible Senior Subordinated Notes
Debt Instrument [Line Items]
Debt instrument, stated interest rate				3.875%	3.875%		3.875%
Debt instrument maturity date					Aug. 01, 2017
6.875% Senior Subordinated Notes due 2019
Debt Instrument [Line Items]
Debt instrument, stated interest rate		6.875%		6.875%	6.875%		6.875%
6.875% senior subordinated notes due 2019		$ 250,000,000		$ 0	$ 0		$ 250,000,000
Prepayment of debt		$ 8,600,000
Write-off of unamortized debt issuance costs				$ 1,900,000
Debt instrument maturity date					Jun. 01, 2019	Jun. 01, 2019
5.25% Senior Notes due 2024
Debt Instrument [Line Items]
Debt instrument, stated interest rate				5.25%	5.25%		5.25%
Debt instrument maturity date			Jun. 15, 2024		Jun. 15, 2024
Securitization Program
Debt Instrument [Line Items]
Debt instrument, stated interest rate				0.94%	0.94%