Schedule II -Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Period			$ 0
Charged to Expenses			0
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Period	27	0
Charged to Expenses	38	28
Deductions	(24)	(28)	0
Discontinued from disposal of Media business	(27)	27	0
Balance End of Period	14	27	0
Allowance for Returns [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Period	651	350	258
Charged to Expenses	(130)	301	350
Deductions	0	0	(258)
Discontinued from disposal of Media business	0	0	0
Balance End of Period	521	651	350
Deferred Tax Valuation Allowance [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Period	24,969	24,722	26,777
Charged to Expenses	0	0	0
Deductions	(7,024)	247	(2,055)
Discontinued from disposal of Media business	0	0	0
Balance End of Period	$ 17,945	$ 24,969	$ 24,722