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QUARTERLY INFORMATION (UNAUDITED) (Details) - USD ($) | 3 Months Ended | 12 Months Ended
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Sep. 29, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 30, 2017 | Sep. 30, 2017 | Jul. 01, 2017 | Apr. 01, 2017 | Dec. 31, 2016 | Sep. 29, 2018 | Sep. 30, 2017
Quarterly Financial Information Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |
Revenues | $ 27,212,000 | $ 28,436,000 | $ 29,456,000 | $ 28,393,000 | $ 25,828,000 | $ 26,967,000 | $ 27,433,000 | $ 26,594,000 | $ 113,497,000 | $ 106,822,000
Income from operations | 1,251,000 | 2,094,000 | 2,512,000 | 1,587,000 | 1,104,000 | 1,586,000 | 2,095,000 | 1,473,000 | 7,444,000 | 6,258,000
Net income attributable to stockholders | $ 616,000 | $ 1,043,000 | $ 1,397,000 | $ 621,000 | $ 467,000 | $ 842,000 | $ 1,047,000 | $ 664,000 | $ 3,677,000 | $ 3,020,000
Net income per share basic and diluted | $ 0.34 | $ 0.56 | $ 0.75 | $ 0.33 | $ 0.26 | $ 0.45 | $ 0.56 | $ 0.36 | $ 1.98 | $ 1.63
Weighted average common stock outstanding - basic and diluted | 1,858,647 | 1,858,647 | 1,858,647 | 1,858,647 | 1,858,647 | 1,858,647 | 1,858,647 | 1,858,647 | 1,858,647 | 1,858,647

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