Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 28, 2015	Jul. 03, 2016	Jun. 28, 2015	Dec. 31, 2015
Significant Accounting Policies [Line Items]
Fair value measurements, transfers between Level 1 and Level 2	$ 0	$ 0	$ 0
Original maturity period of cash and cash equivalents		Three months or less
Gain/(Loss) on disposal of discontinued operations, net of tax	(86,000)		(86,000)
Trapeze [Member]
Significant Accounting Policies [Line Items]
Gain/(Loss) on disposal of discontinued operations, before income tax	(200,000)		(200,000)
Gain/(Loss) on disposal of discontinued operations, net of tax	$ (100,000)		$ (100,000)
Current Assets [Member]
Significant Accounting Policies [Line Items]
Decrease in value of assets and liabilities due to adoption of ASU				$ 6,000,000
Long-Term Debt [Member]
Significant Accounting Policies [Line Items]
Decrease in value of assets and liabilities due to adoption of ASU				25,200,000
Other Long-Lived Assets [Member]
Significant Accounting Policies [Line Items]
Decrease in value of assets and liabilities due to adoption of ASU				$ 19,200,000
Standby Letters of Credit [Member]
Significant Accounting Policies [Line Items]
Loss contingency, range of possible loss, portion not accrued		$ 8,900,000
Bank Guaranties [Member]
Significant Accounting Policies [Line Items]
Loss contingency, range of possible loss, portion not accrued		2,900,000
Surety Bonds [Member]
Significant Accounting Policies [Line Items]
Loss contingency, range of possible loss, portion not accrued		$ 2,400,000