Accrued Liabilities: (Details) - USD ($)	Dec. 26, 2015	Dec. 27, 2014
Accrued Liabilities
Accrued salaries, wages, commissions and bonuses	$ 414,300	$ 696,800
Accrued vacation	221,000	208,800
Accrued interest	283,800	43,400
Other	956,600	810,200
Accrued liabilities	$ 1,875,700	$ 1,759,200