Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Jan. 02, 2016
Deferred tax assets:
Federal net operating loss carryforwards	$ 16,951	$ 13,416
Compensation related	25,650	19,160
Accrued retirement benefits	60,986	43,930
Inventory reserves	9,275	8,183
Product liability and workers compensation reserves	4,550	5,811
Warranty reserves	10,141	9,252
Receivable related reserves	3,376	3,069
UNICAP	5,104	3,520
State net operating loss carryforwards	1,923	1,483
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	16,717	17,549
Other	37,822	32,347
Gross deferred tax assets	192,495	157,720
Valuation allowance	(29,893)	(20,395)
Deferred tax assets	162,602	137,325
Deferred tax liabilities:
Intangible assets	(173,673)	(182,471)
Foreign tax earnings repatriation	(1,178)	(1,363)
Depreciation	(2,957)	(551)
Deferred Tax Liabilities, Derivatives	(3,655)	(6)
Other	(7,200)	(2,783)
Deferred tax liabilities	(188,663)	(187,174)
Deferred Income Tax Liabilities, Net	(26,061)	(49,849)
Current deferred asset	0	51,723
Long-term deferred liability	51,699	11,438
Deferred Tax Liabilities, Net, Noncurrent	$ (77,760)	$ (113,010)