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Line of Credit - Additional Information (Detail)
12 Months Ended
Jul. 07, 2015
USD ($)
Sep. 24, 2014
USD ($)
Dec. 31, 2015
USD ($)
Amendment
Dec. 31, 2014
USD ($)
Line of Credit Facility [Line Items]        
Outstanding principal amount on line of credit facility     $ 4,000,000  
Interest expense related to line of credit facility   $ 101,260 $ 218,275 $ 4,296,170
Number of amendments | Amendment     2  
Seventh Amendment to Loan Agreement with Regions Bank [Member]        
Line of Credit Facility [Line Items]        
Maturity date of loan agreement with Regions Bank     May 31, 2018  
Eighth Amendment To Loan Agreement with Regions [Member]        
Line of Credit Facility [Line Items]        
Working capital from loan agreement with Regions Bank $ 15,000,000      
Line of credit, accordion feature $ 5,000,000      
Eurodollar [Member] | Seventh Amendment to Loan Agreement with Regions Bank [Member]        
Line of Credit Facility [Line Items]        
Decrease in applicable margin rate of loans during the period     0.25%  
Revolving Credit Note and Loan Agreement with Regions Bank (“Regions”) [Member]        
Line of Credit Facility [Line Items]        
Line of credit facility agreement date     Dec. 15, 2010  
Working capital from loan agreement with Regions Bank     $ 15,000,000  
Interest on outstanding principal amount     2.57%  
Outstanding principal amount on line of credit facility     $ 4,000,000  
Amount available to be borrow under line of credit facility     $ 11,000,000  
Interest rate line of credit facility description     The base rate for any day is the greater of (a) the federal funds rate plus one-half of 1%, (b) Region’s published effective prime rate, or (c) the Eurodollar rate for such day based on an interest period of one month.  
Interest expense related to line of credit facility     $ 204,984 $ 163,607
Maturity date of loan agreement with Regions Bank     May 13, 2018  
Revolving Credit Note and Loan Agreement with Regions Bank (“Regions”) [Member] | Base Rate [Member]        
Line of Credit Facility [Line Items]        
Fluctuating interest rate based on base rate     1.50%  
Revolving Credit Note and Loan Agreement with Regions Bank (“Regions”) [Member] | Eligible Accounts Receivable [Member] | Largest Customer [Member]        
Line of Credit Facility [Line Items]        
Percentage of accounts receivable form Quest's customers     80.00%  
Revolving Credit Note and Loan Agreement with Regions Bank (“Regions”) [Member] | Eligible Accounts Receivable [Member] | Other Customer [Member]        
Line of Credit Facility [Line Items]        
Percentage of accounts receivable form Quest's customers     85.00%