Commitments and Contingencies (Narrative) (Details)	3 Months Ended				12 Months Ended				1 Months Ended	3 Months Ended		12 Months Ended
	Dec. 31, 2012 USD ($)	Sep. 30, 2012 USD ($)	Jun. 30, 2012 USD ($)	Mar. 31, 2012 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Mar. 01, 2013 Subsequent Event [Member] USD ($)	Nov. 30, 2010 Purported Stockholder Derivative and Securities Class Action Lawsuits [Member] USD ($)	Aug. 31, 2008 Purported Stockholder Derivative and Securities Class Action Lawsuits [Member] U. S. District Court in the Central District of California [Member] claims	Aug. 31, 2008 Purported Stockholder Derivative and Securities Class Action Lawsuits [Member] Superior Court of the State of California [Member] claims	Dec. 31, 2012 Source Photonics [Member] Indemnification Agreement [Member] USD ($)	Dec. 31, 2012 Interdata [Member] Indemnification Agreement [Member] USD ($)	Dec. 31, 2012 Interdata [Member] Indemnification Agreement [Member] EUR (€)
Commitments and Contingencies Disclosure [Abstract]
Purchase commitments, product manufacturing term					150 days
Manufacturing commitments and component purchase commitments	$ 4,200,000				$ 4,200,000
Royalties, percentage of sales of developed products, minimum					2.00%
Royalties, percentage of sales of developed products, maximum					5.00%
Royalties, remaining future obligation	287,000				287,000
Royalties, additional reserve					243,000
Loss Contingencies [Line Items]
Indemnification claims deductible												1,000,000
Indemnification claims cap												20,000,000
Representations and warranties greement, cash threshold													20,000,000
Representations and warranties greement, potential escrow deposit													2,000,000	1,500,000
Accrued legal reserve released in connection with the settlement agreement	0	0	2,314,000	0	2,314,000	0
Purported stockholder derivative and securities class action lawsuits										5	1
Litigation Settlement, Amount									(10,000,000)
Stipulation of settlement, insurance carriers payment								2,500,000
Stipulation of settlement, payment to plaintiff								500,000
Stipulation of settlement, payment to plaintiff, warrants								$ 250,000
Stipulation of Settlement, payment to plaintiff, warrants, term								5 years