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Inventory Finance Notes Receivable and Allowance for Loan Loss - Summary of Changes in Estimated Allowance for Loan Losses (Detail) - USD ($)
6 Months Ended
Jun. 27, 2015
Jun. 28, 2014
Receivables [Abstract]    
Balance at beginning of period $ 91,640 $ 201,960
Provision for credit losses 18,050 (70,750)
Balance at end of period $ 109,690 $ 131,210