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Subsequent Events - Additional Information (Detail)
 1 Months Ended 12 Months Ended
Dec. 31, 2017
USD ($)
Jul. 01, 2017
USD ($)
Apr. 19, 2017
shares
Mar. 15, 2017
USD ($)
$ / shares
shares
Mar. 02, 2017
USD ($)
Jul. 15, 2016
USD ($)
Apr. 25, 2016
USD ($)
Jan. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Apr. 18, 2017
$ / d
Jan. 30, 2015
$ / shares
shares
Subsequent Event [Line Items]                          
Damages sought           $ 1,300,000              
Proceeds from debt, net of issuance costs                 $ 0 $ 15,625,000 $ 0    
Debt instrument maturity date                 Dec. 01, 2018        
Common Stock [Member]                          
Subsequent Event [Line Items]                          
Warrant to purchase stock, shares | shares                         34,483
Warrant to purchase of stock, per share | $ / shares                         $ 6.96
Oberland Complaint [Member]                          
Subsequent Event [Line Items]                          
Damages sought             $ 1,400,000            
Amount accrued for claim             $ 1,400,000   $ 600,000        
Subsequent Event [Member] | JGB Debt [Member]                          
Subsequent Event [Line Items]                          
Aggregate principal amount       $ 27,800,000                  
Warrant to purchase stock, shares | shares       1,250,000                  
Proceeds from debt, net of issuance costs       $ 24,000,000                  
Pay-off of term debt       11,200,000                  
Minimum cash requirement       $ 9,400,000                  
Debt instrument maturity date       Feb. 28, 2020                  
Interest rate       9.50%                  
Conversion price per share | $ / shares       $ 4.56                  
Debt conversion description       Additionally, after September 1, 2017, upon the satisfaction of certain conditions, including the volume weighted average price of the Company’s common stock exceeding 250% of the Conversion Price for twenty consecutive trading days, the Company can require that the Debentures be converted into shares of the Company’s common stock, subject to certain limitations.                  
Debt, possible redemption amount after March 1, 2018       $ 937,500                  
Debt redemption description       Commencing on March 1, 2018, each of the holders of the Debentures shall have the right, at its option, to require the Company to redeem up to $937,500 of the outstanding principal amount of its Debenture per month. The Company will be required to promptly, but in any event no more than one trading day after the holder delivers a redemption notice to the Company, pay the applicable redemption amount in cash or, at the Company’s election and subject to certain conditions, in shares of the Company’s common stock. If the Company elects to pay the redemption amount in shares of the Company’s common stock, then the shares will be delivered based on a price equal to the lowest of (a) 88% of the average of the three lowest volume weighted average prices of the Company’s common stock over the prior 20 trading days, (b) 88% of the prior trading day’s volume weighted average price, or (c) the Conversion Price. The Company may only opt for payment in shares of the Company’s common stock if certain conditions are met.                  
Percentage of average three lowest volume weighted average prices of common stock if elected to pay in shares       88.00%                  
Percentage of prior trading day's volume weighted average price if elected to pay in shares       88.00%                  
Warrant to purchase of stock, per share | $ / shares       $ 5.00                  
Warrants, issued date       Sep. 16, 2017                  
Warrants expiration date       Sep. 15, 2022                  
Number of shares to seek shareholders approval to issue additional common stock | shares       4,269,522                  
Percentage of gross proceeds from sale of debentures as fee of placement       3.00%                  
Date of first required payment       2018-03                  
Warrants exercisable period from grant date       185 days                  
Warrants, term       5 years 6 months                  
Accruing liquidated damages payable amount per day | $ / d                       7,000  
Subsequent Event [Member] | JGB Debt [Member] | If Debenture is accelerated prior to March 1, 2018 [Member]                          
Subsequent Event [Line Items]                          
Percentage of debt principal and interest outstanding repayment       115.00%                  
Subsequent Event [Member] | JGB Debt [Member] | If Debenture is accelerated after March 1, 2018 but prior to March 1, 2019 [Member]                          
Subsequent Event [Line Items]                          
Percentage of debt principal and interest outstanding repayment       108.00%                  
Subsequent Event [Member] | JGB Debt [Member] | If Debenture is accelerated after March 1, 2019 [Member]                          
Subsequent Event [Line Items]                          
Percentage of debt principal and interest outstanding repayment       105.00%                  
Subsequent Event [Member] | Oberland Complaint [Member]                          
Subsequent Event [Line Items]                          
Settlement amount         $ (600,000)                
Subsequent Event [Member] | Maximum [Member] | Common Stock [Member]                          
Subsequent Event [Line Items]                          
Restriction on sale of common stock | shares     8,534,261                    
Subsequent Event [Member] | Maximum [Member] | JGB Debt [Member]                          
Subsequent Event [Line Items]                          
Required repayment of debt per month       $ 900,000                  
Conexio [Member] | Scenario Forecast [Member] | Maximum [Member]                          
Subsequent Event [Line Items]                          
Consideration to be paid for finished goods acquired   $ 300,000                      
Consideration to be paid for unfinished inventory acquired $ 200,000                        
Conexio [Member] | Subsequent Event [Member]                          
Subsequent Event [Line Items]                          
Acquisition related quarterly payments, percentage on gross revenue               20.00%          
Conexio [Member] | Subsequent Event [Member] | Maximum [Member]                          
Subsequent Event [Line Items]                          
Acquisition related quarterly payments on gross revenue               $ 700,000          
Obligations and liabilities assumed for product warranty claims               $ 35,000