Equity Interest Investments (Details) (USD $) In Thousands, unless otherwise specified	Oct. 06, 2012	Dec. 31, 2011	Oct. 01, 2011
Current assets	$ 72,369	$ 64,146	$ 68,090
Total assets	124,187	130,115	135,086
Current liabilities	40,662	34,650	40,456
Total liabilities	46,885	42,550	48,164
Stiga Sports AB [Member]
Current assets	24,086	23,451	22,337
Non-current assets	8,419	9,460	10,108
Total assets	32,505	32,911	32,445
Current liabilities	9,389	10,033	11,243
Non-current liabilities	5,105	6,334	7,463
Total liabilities	14,494	16,367	18,706
Net assets	$ 18,011	$ 16,544	$ 13,739