Quarterly report pursuant to Section 13 or 15(d)

Financings - Additional Information (Detail)

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Financings - Additional Information (Detail) - USD ($)
1 Months Ended 6 Months Ended
Aug. 30, 2014
Jun. 30, 2015
Apr. 30, 2015
Dec. 31, 2014
Aug. 31, 2014
Financing Activities and Borrowing Arrangements [Line Items]          
Line of credit facility, maximum borrowing amount $ 25,000,000       $ 25,000,000
Guaranteed borrowing capacity     $ 5,000,000    
Revolving credit facility   $ 17,866,000   $ 8,760,000  
Debt instrument repayment date Aug. 20, 2017 Apr. 01, 2016      
Value Lighting          
Financing Activities and Borrowing Arrangements [Line Items]          
Debt refinance amount   $ 3,700,000      
Notes payable, maturity   2018-11      
Balloon payment   $ 1,400,000