The term of option to early terminate the lease agreement.

No definition available.

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- Definition

Amount of cash inflow (outflow) of investing activities of discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 24
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3521-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760

+ Details

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- Definition

Amount of cash inflow (outflow) of operating activities of discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

+ References

+ Details

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Period Type:	duration

- Definition

Term of lessor's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919359-209981

+ Details

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- Definition

Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

+ Details

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- Definition

Amount of operating lease income from lease payments paid and payable to lessor. Excludes variable lease payments not included in measurement of lease receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 50
-Paragraph 6A
-URI http://asc.fasb.org/extlink&oid=121640914&loc=SL77927221-108306

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919372-209981

+ Details

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Balance Type:	credit
Period Type:	duration

- Details

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- Details

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- Details

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Note P - Discontinued Operations (Details Textual) - USD ($)		3 Months Ended	12 Months Ended
	Jan. 03, 2017	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Lease, Lease Income, Lease Payments			$ 1,967,000	$ 1,788,000
Lease Agreement with Drylock [Member]
Lessor, Operating Lease, Term of Contract (Year)	10 years	14 years			14 years
Operating Lease, Lease Income, Lease Payments	$ 1,288,000	$ 1,837,000
Lessor, Operating Lease, Renewal Term (Year)		3 years			3 years
Lease Agreement with Drylock [Member] \| Minimum [Member]
Lessor Operating Lease, Option to Terminate, Term (Year)		5 years
Lease Agreement with Drylock [Member] \| Maximum [Member]
Lessor Operating Lease, Option to Terminate, Term (Year)		10 years
PAPI Assets [Member] \| Discontinued Operations, Disposed of by Sale [Member]
Cash Provided by (Used in) Operating Activities, Discontinued Operations			(0)	(1,052,000)	$ (636,000)
Cash Provided by (Used in) Investing Activities, Discontinued Operations			$ 0	$ 3,107,000	$ 6,290,000