Annual report pursuant to Section 13 and 15(d)

Acquisitions - Additional Information (Detail)

v3.3.1.900
Acquisitions - Additional Information (Detail)
$ / shares in Units, $ in Thousands
 12 Months Ended
Aug. 05, 2015
USD ($)
shares
Feb. 05, 2015
USD ($)
Dec. 18, 2014
USD ($)
Installment
$ / shares
shares
Apr. 17, 2014
USD ($)
Installment
shares
Mar. 08, 2013
USD ($)
Dec. 31, 2015
USD ($)
shares
Dec. 31, 2014
USD ($)
shares
Dec. 31, 2013
USD ($)
Sep. 01, 2015
USD ($)
Mar. 31, 2015
USD ($)
shares
Business Acquisition [Line Items]                    
Business acquisition, number of shares issued | shares           2,929,669 8,035,826      
Goodwill           $ 64,267 $ 42,991 $ 21,498    
Common stock, issued | shares           159,645,000 129,714,000      
Common Stock, Value           $ 160 $ 130      
Contingent consideration, current           7,039 6,269      
Gain on bargain purchase of business         $ 700     743    
Amortization of customer backlog included from proforma results           3,968 5,149 2,859    
Acquisition, severance, and transitions costs included from proforma results           1,950 2,488 $ 3,541    
Income tax benefit included from proforma results             6,550      
Revenue from the date of acquisition           16,300 46,200      
Net income from the date of acquisition           2,900 1,600      
Backlog                    
Business Acquisition [Line Items]                    
Amortization of customer backlog included from proforma results           400 $ 2,400      
DPI Management                    
Business Acquisition [Line Items]                    
Business acquisition aggregate purchase consideration   $ 600                
Business acquisition cash consideration payment   100                
Inventory   $ 600                
Business acquisition consideration paid                 $ 150  
DPI Management | Cash payable on March 1, 2016                    
Business Acquisition [Line Items]                    
Business acquisition consideration payable           150        
DPI Management | Payable on September 1, 2016 in cash or common stock                    
Business Acquisition [Line Items]                    
Business acquisition consideration payable           200        
Energy Source                    
Business Acquisition [Line Items]                    
Business acquisition aggregate purchase consideration $ 31,500                  
Business acquisition cash consideration 10,000                  
Business acquisition, promissory notes issued 10,000                  
Business acquisition consideration payable $ 1,800                  
Business acquisition, number of shares issued | shares 8,695,652                  
Business acquisition, number of shares issued value $ 10,000                  
Estimated fair value of intangible assets 8,768                  
Goodwill 21,276                  
Liabilities assumed 3,921                  
Purchase price 31,502                  
Energy Source | Common Stock                    
Business Acquisition [Line Items]                    
Business acquisition, value of equity issued $ 9,700                  
Value Lighting                    
Business Acquisition [Line Items]                    
Business acquisition aggregate purchase consideration       $ 39,300            
Business acquisition cash consideration       10,600            
Business acquisition consideration payable       $ 7,800            
Business acquisition, number of shares issued | shares       8,468,192            
Business acquisition, number of Installments | Installment       4            
Estimated fair value of intangible assets       $ 19,951            
Goodwill       18,635            
Liabilities assumed       18,438            
Purchase price       39,309            
Business acquisition, common stock issuable installment value       20,900            
Business acquisition, contingent consideration payable in cash or common stock, maximum       $ 11,000            
Common stock, issued | shares                   4,900,000
Common Stock, Value                   $ 5,500
Contingent consideration, current           $ 5,500        
All Around                    
Business Acquisition [Line Items]                    
Business acquisition aggregate purchase consideration     $ 5,000              
Business acquisition cash consideration     900              
Business acquisition consideration payable     300              
All Around | Unregistered Restricted Common Stock                    
Business Acquisition [Line Items]                    
Business acquisition, value of equity issued     $ 1,800              
Business acquisition, number of shares issued | shares     1,600,000              
Business acquisition, number of Installments | Installment     11              
Restricted common stock, issuance commencement date     2015-06              
Acquisition floor price per share | $ / shares     $ 2.00              
Issuance of unregistered restricted stock, expected consideration     $ 3,200              
Tangible assets     1,700              
Estimated fair value of intangible assets     2,200              
Goodwill     2,800              
Liabilities assumed     1,700              
Purchase price     5,000              
All Around | Unregistered Restricted Common Stock | Preliminary Value                    
Business Acquisition [Line Items]                    
Business acquisition floor value of equity issued     $ 1,900