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Note 11 - Income Taxes (Details) - Effective Income Tax Rate Reconciliation (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Mar. 31, 2012 | Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2011
Effective Income Tax Rate Reconciliation [Abstract] |  |  |  |
Expected income tax expense (in Dollars) |  | $ 17,561 | $ 14,434 | $ 9,228
Expected income tax expense |  | 35.00% | 35.00% | 35.00%
State income taxes, net of federal income tax (in Dollars) |  | 1,467 | 1,038 | 750
State income taxes, net of federal income tax |  | 2.90% | 2.50% | 2.80%
Valuation allowance (in Dollars) |  | 631 | (21,237) | (12,672)
Valuation allowance |  | 1.30% | (51.50%) | (48.10%)
Section 199 Qualified Production Activities deduction (in Dollars) |  | (1,157) | (1,001) | (705)
Section 199 Qualified Production Activities deduction |  | (2.30%) | (2.40%) | (2.70%)
Unrecognized tax expense (benefit) (in Dollars) |  | 30 | (1,483) | 490
Unrecognized tax expense (benefit) |  | 0.10% | (3.60%) | 1.90%
Other, net (in Dollars) |  | (836) | (206) | 30
Other, net |  | (1.70%) | (0.50%) | 0.10%
Actual income tax expense (benefit) (in Dollars) | $ (21,600) | $ 17,696 | $ (8,455) | $ (2,879)
Actual income tax expense (benefit) |  | 35.30% | (20.50%) | (10.90%)

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