BASIS OF PRESENTATION, ORGANIZATION AND OPERATIONS OF THE COMPANY - Liquidity (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Dec. 30, 2016	Apr. 01, 2016	Jan. 01, 2016
BASIS OF PRESENTATION, ORGANIZATION AND OPERATIONS OF THE COMPANY
Goodwill	$ 21,947,000	$ 21,947,000
Liquidity
Cash and cash equivalents	$ 19,440,000	$ 22,668,000	$ 4,839,000	$ 16,487,000
Minimum period over which cash and cash equivalents on hand, cash generated by operating activities and funds available under line of credit will be sufficient to finance operating activities	12 months