Acquisitions - Schedule of Purchase Price Allocation for Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) $ in Thousands, € in Millions	Dec. 30, 2016 USD ($)	Dec. 30, 2016 EUR (€)	Dec. 31, 2016 USD ($)	Dec. 30, 2016 EUR (€)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Business Acquisition [Line Items]
Excess purchase price over fair value of net assets acquired			$ 188,841		$ 97,309	$ 102,087
Stromag [Member]
Business Acquisition [Line Items]
Total purchase price, excluding acquisition costs of approximately $2.9 million	$ 196,725	€ 186.4
Cash and cash equivalents	8,758			€ 8.3
Trade receivables	24,367
Inventories	24,339
Property, plant and equipment	40,411
Intangible assets	75,516
Total assets acquired	173,391
Accounts payable	15,370
Accrued payroll	8,425
Accrued expenses and other current liabilities	3,833
Deferred tax liability	26,880
Pension liability	15,283
Total liabilities assumed	69,791
Net assets acquired	103,600
Excess purchase price over fair value of net assets acquired	$ 93,125