Equity Interest Investments (Details 1) - USD ($) $ in Thousands	Oct. 06, 2018	Dec. 30, 2017	Oct. 07, 2017
Schedule of Equity Method Investments [Line Items]
Current assets	$ 96,297	$ 80,260	$ 82,810
Total assets	149,836	156,105	158,247
Current liabilities	20,444	19,542	22,012
Total liabilities	$ 23,416	44,435	52,125
Stiga Sports AB [Member]
Schedule of Equity Method Investments [Line Items]
Current assets		30,623	33,874
Non-current assets		10,854	10,645
Total assets		41,477	44,519
Current liabilities		6,897	11,481
Non-current liabilities		5,462	5,556
Total liabilities		12,359	17,037
Net assets		$ 29,118	$ 27,482