SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES (c) (e) (Details) - USD ($)	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015
Allowance for doubtful accounts
Movement in valuation and qualifying accounts and reserves
Balance at Beginning of Period	$ 235,000	$ 365,000
Additions Charged to Costs and Expenses	63,000	89,000
Deductions - Describe	78,000	219,000
Balance at End of Period	220,000	235,000
Inventory valuation reserve
Movement in valuation and qualifying accounts and reserves
Balance at Beginning of Period	383,000	432,000
Additions Charged to Costs and Expenses	163,000	122,000
Deductions - Describe	111,000	171,000
Balance at End of Period	435,000	383,000
Reserve for self-insured losses
Movement in valuation and qualifying accounts and reserves
Balance at Beginning of Period	2,492,000	2,061,000
Additions Charged to Costs and Expenses	4,601,000	5,124,000
Deductions - Describe	4,759,000	4,693,000
Balance at End of Period	$ 2,334,000	$ 2,492,000