Equity Interest Investments (Details 1) - USD ($) $ in Thousands	Jul. 15, 2017	Dec. 31, 2016	Jul. 09, 2016
Schedule of Equity Method Investments [Line Items]
Current assets	$ 75,802	$ 75,623	$ 79,101
Total assets	150,249	150,761	155,201
Current liabilities	18,574	18,418	17,763
Total liabilities	46,176	49,048	57,394
Stiga Sports AB [Member]
Schedule of Equity Method Investments [Line Items]
Current assets	26,058	28,322	24,963
Non-current assets	10,451	9,379	9,860
Total assets	36,509	37,701	34,823
Current liabilities	5,755	4,847	3,013
Non-current liabilities	5,535	5,133	5,673
Total liabilities	11,290	9,980	8,686
Net assets	$ 25,219	$ 27,721	$ 26,137