Goodwill, Trademarks, and Other Intangible Assets (Details 2) (USD $)	3 Months Ended			3 Months Ended
	Mar. 31, 2013	Mar. 31, 2013 Band	Mar. 31, 2013 Online music business	Mar. 31, 2013 Piano Segment Trademarks	Mar. 31, 2013 Band Segment Trademarks	Dec. 31, 2012 Band Segment Trademarks
Trademarks:
Balance at the beginning of the period	$ 13,420,000			$ 8,846,000	$ 4,574,000	$ 4,574,000
Foreign currency translation impact	(121,000)			(121,000)
Balance at the end of the period	13,299,000			8,725,000	4,574,000	4,574,000
Indefinite-lived intangible assets, cumulative impairment losses		$ 1,300,000	$ 1,200,000