Loan Payable (Details) - Loan Payable. - USD ($)			9 Months Ended
	Oct. 01, 2016	Aug. 03, 2011	Sep. 30, 2016	Sep. 30, 2015
Loan payable
Principal amount of loan		$ 35,000,000
Debt fixed interest rate (as a percent)		4.83%
Number of monthly interest only payments			60 months
Number of remaining monthly principal and interest repayments			60 months
Debt amortization schedule term			25 years
Monthly payment	$ 201,155
Aggregate draw requests from the restricted reserve account(s)			$ 23,508,000
Interest expense on loan			1,268,000	$ 1,268,000
Fees paid associated with the loan		$ 304,000
Amortization expense included in interest expense			$ 23,000	$ 22,000