Equity Interest Investments (Details 1) - USD ($) $ in Thousands	Jul. 14, 2018	Dec. 30, 2017	Jul. 15, 2017
Schedule of Equity Method Investments [Line Items]
Current assets	$ 90,639	$ 80,260	$ 75,802
Total assets	144,120	156,105	150,249
Current liabilities	16,596	19,542	18,574
Total liabilities	$ 19,568	44,435	46,176
Stiga Sports AB [Member]
Schedule of Equity Method Investments [Line Items]
Current assets		30,623	26,058
Non-current assets		10,854	10,451
Total assets		41,477	36,509
Current liabilities		6,897	5,755
Non-current liabilities		5,462	5,535
Total liabilities		12,359	11,290
Net assets		$ 29,118	$ 25,219