GOODWILL AND AMORTIZABLE INTANGIBLE ASSETS - Amortization of Intangible Assets (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016
Amortizable intangible assets
Gross carrying amount	$ 720,000	$ 720,000
Accumulated amortization	720,000	699,000
Amortization expense	21,000	45,000
Future amortization expenses	0
Restrictive land covenant [Member]
Amortizable intangible assets
Gross carrying amount	350,000	350,000
Accumulated amortization	350,000	332,000
Customer relationships [Member]
Amortizable intangible assets
Gross carrying amount	370,000	370,000
Accumulated amortization	$ 370,000	$ 367,000