Segment Disclosure Segment Reporting, Reporting by Segment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Segment Reporting [Abstract]
Revenues	$ 9,647	[1]	$ 9,178	[1]	$ 8,981	[1]	$ 10,924	[1]	$ 12,518	[1]	$ 10,177	[1]	$ 11,398	[1]	$ 11,764	[1]	$ 38,730	[1]	$ 45,857	[1]	$ 134,017	[1]
Gross Profit	5,331		4,998		5,197		6,386		7,590		6,382		6,759		7,111		21,912		27,842		56,455
Restructuring charges	(164)		(227)		0		0		0		0		0		(2,254)		(391)		(2,254)		(1,176)
Litigation charges	0		0		0		0		0		0		0		(3,452)		0		(3,452)		0
Interest and other income (expense), net	269		719		(69)		11		(216)		(606)		(164)		284		930		(702)		(362)
Interest Expense, Other	(261)		(271)		(280)		(288)		(297)		(305)		(312)		(321)		(1,100)		(1,235)		(1,360)
Income Tax Expense (Benefit)	97		33		106		(25)		55		113		106		37		211		311		219
Net Income (Loss) Attributable to Parent	$ (2,553)		$ (9,188)		$ (8,612)		$ (3,973)		$ (4,023)		$ (3,513)		$ (827)		$ (9,247)		$ (24,326)		$ (17,610)		$ (12,818)

[1] 1 Includes related party amounts of $2,993 in 2014, $7,363 in 2013, and $6,458 in 2012. See Note 14 for additional information on related party transactions.