Equity Interest Investments (Details) - USD ($) $ in Thousands	Mar. 24, 2018	Dec. 30, 2017	Mar. 25, 2017
Schedule of Equity Method Investments [Line Items]
Current assets	$ 75,227	$ 80,260	$ 71,880
Total assets	150,221	156,105	145,297
Current liabilities	32,257	19,542	15,070
Total liabilities	39,012	44,435	43,096
Stiga Sports AB [Member]
Schedule of Equity Method Investments [Line Items]
Current assets	29,841	30,623	27,931
Non-current assets	10,560	10,854	9,539
Total assets	40,401	41,477	37,470
Current liabilities	6,020	6,897	3,642
Non-current liabilities	5,429	5,462	5,376
Total liabilities	11,449	12,359	9,018
Net assets	$ 28,952	$ 29,118	$ 28,452