Equity Interest Investments (Details 2) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Oct. 07, 2017	Oct. 01, 2016	Oct. 07, 2017	Oct. 01, 2016
Schedule of Equity Method Investments [Line Items]
Net sales	$ 41,892	$ 38,793	$ 125,097	$ 121,824
Net income	3,118	4,243	6,602	8,030
Stiga Sports AB [Member]
Schedule of Equity Method Investments [Line Items]
Net sales	13,036	10,635	29,333	27,161
Gross profit	6,006	4,918	13,718	12,661
Net income	$ 1,229	$ 1,146	$ 1,278	$ 1,498

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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