Business Segments Information / Major Customers Revenue and Operating Income (Loss) (Details) (USD $)	3 Months Ended								12 Months Ended												3 Months Ended		12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2012 Disc Publishing		Dec. 31, 2011 Disc Publishing		Dec. 31, 2010 Disc Publishing		Sep. 29, 2012 Enterprise Content Distribution Software	Sep. 30, 2012 Enterprise Content Distribution Software	Dec. 31, 2012 Enterprise Content Distribution Software		Dec. 31, 2011 Enterprise Content Distribution Software		Dec. 31, 2010 Enterprise Content Distribution Software		Dec. 31, 2012 Qumu, Inc. Enterprise Content Distribution Software	Dec. 31, 2011 Qumu, Inc. Enterprise Content Distribution Software
Segment Reporting Information [Line Items]
Revenues									$ 79,443,000		$ 83,634,000		$ 88,731,000		$ 69,607,000		$ 81,874,000		$ 88,731,000				$ 9,836,000		$ 1,760,000		$ 0
Operating income (loss)	(1,313,000)	(31,729,000)	(3,727,000)	(2,975,000)	(1,836,000)	2,138,000	1,820,000	2,326,000	(39,744,000)	[1]	4,448,000	[1]	11,572,000	[2]	3,484,000	[1]	9,659,000	[1]	12,572,000	[2]			(43,228,000)	[1]	(5,211,000)	[1]	(1,000,000)	[2]
Amortization expense																													1,700,000	400,000
Goodwill impairment charge		22,200,000							(22,218,000)												22,200,000
Intangible asset impairment charge	7,300,000								(7,330,000)												7,300,000	7,300,000
Contracted commitment backlog revenues to be recognized	$ 8,941,000				$ 8,492,000				$ 8,941,000		$ 8,492,000

[1] Operating loss for the enterprise content distribution software segment in 2012 and 2011 includes amortization expense of $1.7 million and $0.4 million, respectively, for amortization of intangible assets established as part of the Qumu acquisition. Operating loss for this segment also includes recognized asset impairment charges consisting of $22.2 million of goodwill and $7.3 million of other intangible assets for 2012. Operating income for the disc publishing segment in 2011 includes $1.7 million of nonrecurring transaction costs associated with the acquisition of Qumu. See Note 9, “Goodwill and Intangible Assets,” for additional information regarding the Company’s intangible assets.

[2] Operating loss for the enterprise content distribution software segment in 2010 consists of expenses incurred to develop and support the Company's Signal secure online content delivery solution.