XML 42 R31.htm IDEA: XBRL DOCUMENT v3.3.1.900
Note and Line of Credit - Additional Information (Detail) - USD ($)
1 Months Ended
Apr. 13, 2015
Mar. 28, 2016
Jul. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Line of Credit Facility [Line Items]          
Investment amount outstanding       $ 0 $ 0
Investment related liability       0  
Libertyville Bank and Trust Company [Member]          
Line of Credit Facility [Line Items]          
Line of credit facility, maximum borrowing capacity $ 300,000        
Line of credit facility maximum borrowing capacity as percentage of accounts receivable 75.00%        
Minimum amount of cash required on advances $ 1,000,000        
Line of credit facility repayment period 5 days        
Line of credit facility, expiration date Mar. 04, 2016        
Line of credit facility, borrowing       $ 0  
Libertyville Bank and Trust Company [Member] | Subsequent Event [Member]          
Line of Credit Facility [Line Items]          
Line of credit facility, extended expiration date   Mar. 04, 2017      
Libertyville Bank and Trust Company [Member] | Prime Rate [Member]          
Line of Credit Facility [Line Items]          
Variable interest rate 1.00%        
Letter of Credit [Member]          
Line of Credit Facility [Line Items]          
Letter of credit and related promissory note     $ 30,000    
Borrowings incurred     $ 0    
Interest rate     1.00%