v2.4.1.9
Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
3 Months Ended
Mar. 28, 2015
Dec. 27, 2014
Mar. 29, 2014
Mar. 28, 2014
Dec. 28, 2013
Schedule Of Significant Accounting Policies [Line Items]          
Allowance for doubtful loans and leases receivable $ 98,350us-gaap_LoansAndLeasesReceivableAllowance $ 91,640us-gaap_LoansAndLeasesReceivableAllowance $ 234,930us-gaap_LoansAndLeasesReceivableAllowance   $ 201,960us-gaap_LoansAndLeasesReceivableAllowance
Periodic installments of principal and interest 24 months        
Definite-lived intangible assets 0us-gaap_FiniteLivedIntangibleAssetsNet     0us-gaap_FiniteLivedIntangibleAssetsNet  
Maximum [Member]          
Schedule Of Significant Accounting Policies [Line Items]          
Insured amount by the federal deposit insurance corporation $ 250,000us-gaap_CashFDICInsuredAmount
/ us-gaap_RangeAxis
= us-gaap_MaximumMember