Quarterly report pursuant to sections 13 or 15(d)

Preliminary Values Assigned to Assets Acquired and Liabilities Assumed (Detail)

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Preliminary Values Assigned to Assets Acquired and Liabilities Assumed (Detail) (USD $)
Jun. 30, 2013
Mar. 08, 2013
Dec. 31, 2012
Dec. 31, 2011
Business Acquisition [Line Items]        
Cash $ 68,661      
Accounts receivable 1,048,345      
Inventory 1,352,326      
Goodwill 10,165,993   10,165,993 1,988,920
Intangible assets   1,599,000    
Other assets 333,470      
Assets acquired 23,675,795      
Accounts payable 2,692,065      
Accrued liabilities 1,137,045      
Deferred revenue 104,000      
Liabilities assumed 5,399,860      
Preliminary purchase price (enterprise value) 18,275,935 856,250    
Preliminary purchase price (equity value) 14,922,982      
Customer Deposits
       
Business Acquisition [Line Items]        
Other current liabilities 1,466,750      
Customer Relationships
       
Business Acquisition [Line Items]        
Intangible assets 7,273,000      
Trademarks
       
Business Acquisition [Line Items]        
Intangible assets $ 3,434,000