Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Dec. 31, 2011
Operating leases
Operating leases, rent expense	$ 332	$ 426	$ 671	$ 897
Other Commitments
Other Commitments Content Licensing Agreement Due In Remaining Fiscal Year	3,500		3,500
Other commitments, product and services agreement, minimum future payments per year	1,600		1,600
Other commitments, product and services agreement, minimum future payments due within six months	$ 800		$ 800