Nature of Business and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014 Manufacturer	Dec. 31, 2013	Dec. 31, 2012
Basis Of Presentation [Line Items]
Common Stock, par value	$ 0.001	$ 0.001
Number of contract manufacturers	2
Percentage of contract manufacturers cost	90.00%
Percentage of amount due to vendors payable	12.30%
FDIC insurance coverage	$ 250,000
Net deposit amount exceeding specified amount under FDIC	70,200,000
Discount for prompt payment	2.00%
Percentage of prompt payment discount, accrued	100.00%
Allowance for prompt payment of discount	50,000	0
Allowance for Doubtful Accounts Receivable	0	0
Allowance for Doubtful Accounts Receivable, Write-offs	0	0
Impairment loss	295,000
Impairment charges recognized on finite lived intangibles assets	0	0	0
Goodwill impairment charges	0	0	0
Deferred revenue related to sales	800,000	0
Sales return maximum duration	18 months
Offered period for sales return prior to expiration	6 months
Offered period for sales return subsequent to expiration	12 months
Discount for prompt payment	2.00%
Advertising expenses	4,800,000	0	0
Shipping and handling costs	60,000	0	0
Outstanding stock options and warrants	3,196,384	6,549,719	5,509,075
Onsolis [Member]
Basis Of Presentation [Line Items]
Idle equipment net	2,400,000
Bunavail [Member]
Basis Of Presentation [Line Items]
Impairment loss	300,000
Deferred cost of sales	$ 700,000
Minimum [Member]
Basis Of Presentation [Line Items]
Period of payments from customers	30 days
Estimated useful lives of equipment	3 years
Maximum [Member]
Basis Of Presentation [Line Items]
Period of payments from customers	37 days
Estimated useful lives of equipment	10 years