Summary of Significant Accounting Policies (Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 02, 2016	Oct. 03, 2015	Jul. 04, 2015	Apr. 04, 2015	Jan. 03, 2015	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Numerators:
Numerators for both basic and diluted EPS net income attributable to parent company	$ 32,231	$ 40,848	$ 23,879	$ 8,478	$ 7,082	$ 33,588	$ 9,705	$ 11,096	$ 105,436	$ 61,471	$ 63,683
Denominators:
Denominator for basic EPS weighted- average common shares outstanding	44,158,000	44,263,000	44,416,000	44,304,000	44,324,000	44,690,000	45,020,000	45,039,000	44,285,298	44,759,716	45,250,665
Potentially dilutive shares from stock-based compensation plans (shares)									1,156,000	819,000	706,000
Denominator for diluted EPS (shares)	45,199,000	45,403,000	45,621,000	45,524,000	45,202,000	45,611,000	45,868,000	45,838,000	45,440,653	45,578,872	45,956,280
Earnings per share - basic	$ 0.73	$ 0.92	$ 0.54	$ 0.19	$ 0.16	$ 0.75	$ 0.22	$ 0.25	$ 2.38	$ 1.37	$ 1.41
Earnings per share - diluted	$ 0.71	$ 0.90	$ 0.52	$ 0.19	$ 0.16	$ 0.74	$ 0.21	$ 0.24	$ 2.32	$ 1.35	$ 1.39	$ 1.07	$ 1.01