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QUARTERLY INFORMATION (UNAUDITED) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Jan. 02, 2016	Sep. 30, 2017	Oct. 01, 2016
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 25,828,000	$ 26,967,000	$ 27,433,000	$ 26,594,000	$ 24,983,000	$ 26,383,000	$ 26,974,000	$ 25,278,000	$ 106,822,000	$ 103,618,000
Income from operations	1,104,000	1,586,000	2,095,000	1,473,000	1,061,000	2,411,000	1,978,000	1,351,000	6,258,000	6,801,000
Net income attributable to stockholders	$ 467,000	$ 842,000	$ 1,047,000	$ 664,000	$ 395,000	$ 1,147,000	$ 874,000	$ 624,000	$ 3,020,000	$ 3,040,000
Net income per share basic and diluted	$ 0.26	$ 0.45	$ 0.56	$ 0.36	$ 0.21	$ 0.62	$ 0.47	$ 0.34	$ 1.63	$ 1.64
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

X

- Definition

The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
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-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 944
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-Section S99
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The net result for the period of deducting operating expenses from operating revenues.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
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-Section S99
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-Subparagraph (SX 210.5-03.1)
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Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

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