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Note H - Income Taxes (Details Textual) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017
Effective Income Tax Rate Reconciliation, Percent, Total | 20.60% | 28.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | $ 0 |
Earliest Tax Year [Member] | Domestic Tax Authority [Member] |  |
Open Tax Year | 2015 |
Earliest Tax Year [Member] | State and Local Jurisdiction [Member] |  |
Open Tax Year | 2007 |
Earliest Tax Year [Member] | Foreign Tax Authority [Member] | Swiss Federal Tax Administration (FTA) [Member] |  |
Open Tax Year | 2015 |

X
- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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