Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v3.3.0.814
Summary of Significant Accounting Policies - Additional Information (Detail)
 1 Months Ended 3 Months Ended 9 Months Ended
Dec. 01, 2014
shares
Apr. 17, 2014
shares
Aug. 31, 2014
USD ($)
Sep. 30, 2014
USD ($)
shares
Sep. 30, 2015
USD ($)
Segment
shares
Sep. 30, 2014
USD ($)
shares
Oct. 31, 2015
USD ($)
Apr. 30, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Summary Of Significant Accounting Policies [Line Items]                    
Number of reportable segments | Segment         1          
Cash and cash equivalents       $ 2,398,000 $ 882,000 $ 2,398,000     $ 6,033,000 $ 1,757,000
Cash flow from operations         17,804,000 15,697,000        
Working capital         24,000,000       $ 18,800,000  
Line of credit facility, maximum borrowing amount     $ 25,000,000              
Borrowing capacity         22,900,000          
Debt instrument agreement period     3 years              
Guaranteed borrowing capacity               $ 5,000,000    
Bank loan payable         2,100,000          
Convertible stock, Conversion of preferred stock | shares 36,300,171                  
Revenue from sales taxes         $ 3,000,000 $ 1,500,000        
Maturity of temporary cash investments         3 months          
Business acquisition, number of shares to be issued | shares         4,926,004          
Anti-dilutive shares | shares       27,200,000   27,200,000        
Scenario, Previously Reported                    
Summary Of Significant Accounting Policies [Line Items]                    
Number of reportable segments | Segment         2          
Subsequent Event                    
Summary Of Significant Accounting Policies [Line Items]                    
Line of credit facility, maximum borrowing amount             $ 30,000,000      
Value Lighting                    
Summary Of Significant Accounting Policies [Line Items]                    
Net deferred tax liabilities         $ 5,500,000          
Business acquisition, number of shares to be issued | shares   8,468,192                
Minimum                    
Summary Of Significant Accounting Policies [Line Items]                    
Product warranty         1 year          
Intangible assets estimate useful life         1 year          
Maximum                    
Summary Of Significant Accounting Policies [Line Items]                    
Product warranty         10 years          
Intangible assets estimate useful life         17 years 6 months          
Contingent payment of stock issued for acquisitions of businesses         $ 6,200,000