Commitments and Contingencies (Narrative) (Details)	0 Months Ended	3 Months Ended							12 Months Ended				1 Months Ended	3 Months Ended					12 Months Ended
	Apr. 08, 2013 USD ($)	Dec. 31, 2013 USD ($)	Sep. 30, 2013 USD ($)	Jun. 30, 2013 USD ($)	Dec. 31, 2012 USD ($)	Sep. 30, 2012 USD ($)	Jun. 30, 2012 USD ($)	Mar. 31, 2012 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Jun. 24, 2013	Nov. 30, 2010 Purported Stockholder Derivative and Securities Class Action Lawsuits [Member] USD ($)	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, 2013 Interdata [Member] Indemnification Agreement [Member] USD ($)	Dec. 31, 2013 Interdata [Member] Indemnification Agreement [Member] EUR (€)	Dec. 31, 2012 Interdata [Member] Indemnification Agreement [Member] USD ($)	Dec. 31, 2013 Insurance Settlement [Member] USD ($)
Commitments and Contingencies Disclosure [Abstract]
Purchase commitments, product manufacturing term									150 days
Manufacturing commitments and component purchase commitments		$ 14,200,000							$ 14,200,000
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
Indemnification Obligation, Days in Excess of Statute of Limitations									90 days
Loss Contingencies [Line Items]
Indemnification claims deductible									1,000,000
Indemnification claims cap									20,000,000
Period to Obtain Required Insurance, Days After Closing									90 days
Representations and warranties greement, cash threshold																20,000,000
Representations and warranties greement, potential escrow deposit																	1,500,000	2,000,000
Accrued legal reserve released in connection with the settlement agreement		(190,000)	(132,000)	(102,000)	0	0	2,314,000	0	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				250,000					250,000
Stipulation of Settlement, payment to plaintiff, warrants, term	5 years								5 years
Reform Actions Required, Days from Dismissal of Derivative Litigation												120 days
Proceeds from Legal Settlements																			1,000,000
Derivative litigation costs		$ 1,900,000							$ 1,900,000