Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended			9 Months Ended	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2013 Patents [Member]	Dec. 31, 2012 Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net of accumulated amortization						$ 527	$ 0
Accounts Receivable [Abstract]
Allowance for doubtful accounts	115		115		49
Provision for doubtful accounts			99	119
Accounts receivable charge-offs			33	23
Revenue Recognition [Abstract]
Net sales returns provision	178	88	648	233
Provision charges	$ 153	$ 135	$ 485	$ 161