Note 11 - Debt (Details Textual)	Sep. 30, 2019 USD ($)
Long-term Debt, Current Maturities, Total	$ 279,588
Long-term Debt, Excluding Current Maturities, Total	32,903
Collateral Pledged [Member] \| Loan with Ministry of Science and Innovation, Due February 2, 2024 [Member] \| Genasys Acquisition [Member] \| Loans With Governmental Agencies [Member]
Long-term Debt, Current Maturities, Total	$ 263,136
Cash Pledged as Collateral, Percentage of the Original Principal Received	66.60%

Represents the amount of cash pledged as collateral, expressed as a percentage of the original principal received.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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