The percentage of ownership in the investee accounted for under the cost method of accounting.

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- Definition

Amounts due from investee for license and equipment fee.

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No definition available.

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- Definition

Percentage of royalties payable on third party sales

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No definition available.

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- Definition

Revenue from multiple-deliverable arrangements that include licensing fees and services revenue. Licensing revenue is consideration received from another party for the right to use, but not own, certain of the entity's intangible assets. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing process, software or trademark. Licensing fees are generally, but not always, fixed as to amount and not dependent upon the revenue generated by the licensing party. An entity may receive licensing fees for licenses that also generate royalty payments to the entity. Services revenue may be derived by providing other, nonspecified, services during the reporting period.

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- Definition

Describes the terms of a significant arrangement with a supplier (excluding an unconditional purchase obligation) to acquire goods or services over a period of time beyond one year or the normal operating cycle, if longer, which may include identification of the goods or services to be purchased, pricing, effects on pricing of failing to reach minimum quantities required to be purchased, cancellation rights, and termination provisions.

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No definition available.

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Period covered by the long-term purchase commitment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Dividends received on equity and other investments during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585

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- Definition

Minimum amount to be expended to satisfy the terms of arrangements in which the entity has agreed to expend funds to procure goods or services, excluding long-term purchase commitments or unconditional purchase obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(19))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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-Name Accounting Standards Codification
-Topic 942
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(17))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-Name Accounting Standards Codification
-Topic 210
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-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

No definition available.

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07.1(c))
-URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999

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NOTE H - INVESTMENT IN MORION, INC. (Details) - USD ($)		3 Months Ended		6 Months Ended		12 Months Ended
NOTE H - INVESTMENT IN MORION, INC. (Details) - USD ($)	Oct. 22, 2012	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2017	Oct. 31, 2016	Apr. 30, 2017	Apr. 30, 2016	Mar. 29, 2016
Morion Inc [Member]
NOTE H - INVESTMENT IN MORION, INC. (Details) [Line Items]
Cost Method Investment Ownership Percentage		4.60%		4.60%
Related Party Transaction, Purchases from Related Party				$ 170,000	$ 204,000
Revenue from Related Parties		$ 106,000	$ 123,000	182,000	10,000		$ 375,000
Proceeds from Dividends Received				51,000	100,000
Morion Inc [Member] \| Licensing Agreement [Member]
NOTE H - INVESTMENT IN MORION, INC. (Details) [Line Items]
Long-term Purchase Commitment, Description	The agreement required the Company to sell certain fully-depreciated production equipment previously owned by the Company and to provide training to Morion employees to enable Morion to produce a minimum of 5,000 rubidium oscillators per year.
License And Equipment Fee Receivable	$ 2,700,000
Percentage Of Royalties Payable On Third Party Sales	5.00%
Long-term Purchase Commitment, Period	5 years
Purchase Commitment, Remaining Minimum Amount Committed	$ 400,000
License and Services Revenue				$ 182,000	$ 10,000
Morion Inc [Member] \| Balance for Transfer of License Due Once State Department Approves Removal of Certain Provisions [Member]
NOTE H - INVESTMENT IN MORION, INC. (Details) [Line Items]
License And Equipment Fee Receivable								$ 602,000
Licensing Agreement [Member] \| Morion Inc [Member]
NOTE H - INVESTMENT IN MORION, INC. (Details) [Line Items]
License and Services Revenue						$ 210,000	$ 392,500