Note 11 - Supplemental Cash Flow Information - Supplemental Cash Flow Information (Details) - USD ($)	9 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Cash payments:
Interest	$ 1,213,000	$ 66,000
Income taxes	1,556,000	2,484,000
Issuance of common shares as compensation	234,000	331,000
Issuance of stock warrants		575,000
Issuance of common shares to fund deferred compensation plan	$ 354,000

The value of stock warrants issued.

No definition available.

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- Definition

The total fair value of shares issued during the period under a deferred compensation arrangement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586

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- Definition

Gross value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP). Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

+ References

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