Commitments and Contingencies (Narrative) (Details) (USD $)	0 Months Ended	12 Months Ended		1 Months Ended	3 Months Ended	1 Months Ended
	Apr. 08, 2013	Dec. 31, 2014	Dec. 31, 2013	Nov. 30, 2010	Aug. 31, 2008 claims	May 31, 2014 subcontractor
Commitments and Contingencies Disclosure [Abstract]
Purchase commitments, product manufacturing term		150 days
Manufacturing commitments and component purchase commitments		$ 7,700,000
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
Royalties, additional reserve		243,000
Loss Contingencies [Line Items]
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
Stipulation of Settlement, payment to plaintiff, warrants, term	5 years	5 years
Proceeds from Legal Settlements			1,000,000
Derivative litigation costs			1,900,000
Indemnification Agreement [Member]
Loss Contingencies [Line Items]
Indemnification Obligation, Days in Excess of Statute of Limitations		90 days
Indemnification claims deductible		1,000,000
Indemnification claims cap		20,000,000
Loss contingency accrual, provision		0	0
Purported Stockholder Derivative and Securities Class Action Lawsuits [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount				(10,000,000)
Purported Stockholder Derivative and Securities Class Action Lawsuits [Member] | U. S. District Court in the Central District of California [Member]
Loss Contingencies [Line Items]
Purported stockholder derivative and securities class action lawsuits					5
Purported Stockholder Derivative and Securities Class Action Lawsuits [Member] | Superior Court of the State of California [Member]
Loss Contingencies [Line Items]
Purported stockholder derivative and securities class action lawsuits					1
Pending Litigation [Member] | Purported Breach of Supply Agreements Claim [Member] | Italian Civil Court [Member]
Loss Contingencies [Line Items]
Loss Contingency, Number of Subcontractors						2
Loss Contingency, Damages Sought, Value						$ 3,000,000