Equity Interest Investments (Details 1) - USD ($) $ in Thousands	3 Months Ended
Mar. 24, 2018	Mar. 25, 2017
Schedule of Equity Method Investments [Line Items]
Net sales	$ 32,149	$ 31,866
Net loss	1,216	1,388
Stiga Sports AB [Member]
Schedule of Equity Method Investments [Line Items]
Net sales	6,174	5,125
Gross profit	2,677	2,278
Net loss	$ (23)	$ (105)

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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