Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Oct. 01, 2017	Jul. 02, 2017	Apr. 02, 2017	Dec. 31, 2016	Oct. 02, 2016	Jul. 03, 2016	Apr. 03, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Jan. 31, 2018
Capital Stock [Abstract]
Common stock, shares authorized (in shares)	100,000,000				100,000,000				100,000,000	100,000,000
Common stock, par value (in dollars per share)	$ 0.10				$ 0.10				$ 0.10	$ 0.10
Common stock, shares outstanding (in shares)	35,374,345				34,969,987				35,374,345	34,969,987
Preferred stock, shares authorized (in shares)	1,000,000				1,000,000				1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0				0				0	0
Preferred stock, shares outstanding (in shares)	0				0				0	0
Cash Dividends [Abstract]
Cash dividends paid									$ 7.0
Cash dividends paid (in dollars per share)	$ 0.05	$ 0.05	$ 0.05	$ 0.05	$ 0.05	$ 0.05	$ 0.05	$ 0.05	$ 0.20
Stock Award and Incentive Plan [Abstract]
Term of stock options granted under Plan									10 years
Vesting period, generally, for stock options granted under the plan									3 years
Shares Available for Grant [Roll Forward]
Balance, beginning of year (in shares)				1,202,426				1,491,965	1,202,426	1,491,965	996,127
Authorized (in shares)											880,000
Granted (in shares)									(257,072)	(538,787)	(455,275)
Exercised/vested (in shares)									0	0	0
Canceled (in shares)									91,151	249,248	71,113
Balance, end of year (in shares)	1,036,505				1,202,426				1,036,505	1,202,426	1,491,965
Subsequent Event [Member] | Dividend Declared 2018 Q1 [Member]
Cash Dividends [Abstract]
Cash dividend declared												$ 1.7
Cash dividend declared (in dollars per share)												$ 0.05
Stock Options [Member]
Stock Options [Roll Forward]
Balance, beginning of year (in shares)				1,198,725				1,091,844	1,198,725	1,091,844	951,079
Granted (in shares)									187,533	383,622	238,773
Exercised/vested (in shares)									(353,636)	(150,944)	(74,839)
Canceled (in shares)									(35,783)	(125,797)	(23,169)
Balance, end of year (in shares)	996,839				1,198,725				996,839	1,198,725	1,091,844
Weighted Average Exercise Price Per Share [Abstract]
Balance, beginning of year (in dollars per share)				$ 41.66				$ 42.29	$ 41.66	$ 42.29	$ 37.46
Granted (in dollars per share)									77.99	38.59	60.40
Exercised/vested (in dollars per share)									41.56	36.66	33.12
Canceled (in dollars per share)									50.47	43.78	60.22
Balance, end of year (in dollars per share)	$ 48.21				$ 41.66				$ 48.21	$ 41.66	$ 42.29
Restricted Stock [Member]
Restricted Stock [Roll Forward]
Balance, beginning of year (in shares)				227,213				284,245	227,213	284,245	175,488
Granted (in shares)									69,539	155,165	216,502
Exercised/vested (in shares)									(61,274)	(88,746)	(59,801)
Canceled (in shares)									(55,368)	(123,451)	(47,944)
Balance, end of year (in shares)	180,110				227,213				180,110	227,213	284,245
Weighted Average Exercise Price Per Share [Abstract]
Balance, beginning of year (in dollars per share)				$ 49.57				$ 58.63	$ 49.57	$ 58.63	$ 50.56
Granted (in dollars per share)									78.00	38.37	60.32
Exercised/vested (in dollars per share)									52.51	57.38	47.51
Canceled (in dollars per share)									52.74	50.72	51.43
Balance, end of year (in dollars per share)	$ 58.57				$ 49.57				$ 58.57	$ 49.57	$ 58.63