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Note 1 - Basis of Presentation and Summary of Significant Accounting Policies (Details Textual) | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2018 USD ($) | Dec. 31, 2018 USD ($) | Jul. 01, 2018 USD ($) | Jun. 30, 2018 USD ($)
Number of Operating Segments |  | 5 |  |
Number of Reportable Segments |  | 2 |  |
Retained Earnings (Accumulated Deficit), Ending Balance | $ 895,205,000 | $ 895,205,000 |  | $ 876,931,000
Available-for-sale Securities, Total |  |  |  | 54,300,000
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax, Total |  |  |  | 35,400,000
Deferred Tax Liabilities, Other Comprehensive Income |  |  |  | 8,300,000
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total | (83,011,000) | (83,011,000) |  | $ (44,814,000)
Accounting Standards Update 2014-09 [Member] |  |  |  |
Retained Earnings (Accumulated Deficit), Ending Balance |  |  | $ 98,000 |
Accounting Standards Update 2016-01 [Member] |  |  |  |
Retained Earnings (Accumulated Deficit), Ending Balance |  |  | 27,100,000 |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total |  |  | (27,100,000) |
Accounting Standards Update 2016-01 [Member] | Other Nonoperating Income (Expense) [Member] |  |  |  |
Equity Securities, FV-NI, Gain (Loss), Total | $ 7,200,000 | $ 9,400,000 |  |
Accounting Standards Update 2018-02 [Member] |  |  |  |
Retained Earnings (Accumulated Deficit), Ending Balance |  |  | (2,400,000) |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total |  |  | $ 2,400,000 |

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