Commitments and Contingencies (Details) (USD $)	0 Months Ended	3 Months Ended		9 Months Ended
	Dec. 01, 2013	Sep. 30, 2014 sqft	Sep. 30, 2013	Sep. 30, 2014 sqft	Sep. 30, 2013	Aug. 02, 2013 sqft
Product Warranty [Abstract]
Period of warranty				12 months
Change in warranty accrual [Roll Forward]
Beginning accrued warranty and related costs		$ 980,000	$ 804,000	$ 1,048,000	$ 588,000
Accruals for warranties issued		243,000	183,000	820,000	558,000
Adjustments related to pre-existing warranties including expirations and changes in estimates		(55,000)	14,000	(357,000)	351,000
Cost of warranty repair		(264,000)	(106,000)	(607,000)	(602,000)
Ending accrued warranty and related costs		904,000	895,000	904,000	895,000
Contractual Obligations [Abstract]
Area of property under long-term operating lease (in square feet)		27,760		27,760
Period of operating lease				7 years
Period to be lapsed for cancelling lease				5 years
Penalty payment				142,000
Revised facility area						20,767
Term of revised area contract	2 years
Savings as a result of revised facility area						382,000
Aggregate amount payable towards royalty		7,000,000		7,000,000
Term of royalty agreement				8 years
Outstanding contractual obligations [Abstract]
Total		3,414,000		3,414,000
Less than 1 year		1,060,000		1,060,000
1-3 years		1,536,000		1,536,000
4-5 years		772,000		772,000
More than 5 years		46,000		46,000
Operating leases [Member]
Outstanding contractual obligations [Abstract]
Total		689,000		689,000
Less than 1 year		260,000		260,000
1-3 years		330,000		330,000
4-5 years		53,000		53,000
More than 5 years		46,000		46,000
Royalty agreement [Member]
Outstanding contractual obligations [Abstract]
Total		2,725,000		2,725,000
Less than 1 year		800,000		800,000
1-3 years		1,206,000		1,206,000
4-5 years		719,000		719,000
More than 5 years		$ 0		$ 0