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Note 1 - Summary of Significant Accounting Policies - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Basic |  |
Continuing operations earnings (loss) | $ 51,188 | $ (36,483)
Deduct preferred stock dividends | 23 | 23
Undistributed earnings (loss) | 51,165 | (36,506)
Earnings (loss) attributable to participating preferred shareholders | 206 | (143)
Earnings (loss) attributable to common shareholders | $ 50,959 | $ (36,363)
Weighted average common shares outstanding (in shares) | 9,264 | 9,652
Basic earnings (loss) from continuing operations per common share (in dollars per share) | $ 5.50 | $ (3.77)
Diluted |  |
Earnings (loss) attributable to common shareholders | $ 50,959 | $ (36,363)
Add dividends on convertible preferred stock | 20 |
Earnings (loss) attributable to common stock on a diluted basis | $ 50,979 | $ (36,363)
Weighted average common shares outstanding (in shares) | 9,264 | 9,652
Additional shares to be issued related to the equity compensation plan (in shares) | 2 |
Additional shares to be issued under full conversion of preferred stock (in shares) | 67 |
Total shares for diluted (in shares) | 9,333 | 9,652
Diluted earnings (loss) from continuing operations per share (in dollars per share) | $ 5.46 | $ (3.77)
Discounted Operations, Basic |  |
Discontinued operations earnings | $ 1,147 | $ 42,230
Deduct preferred stock dividends | 23 | 23
Undistributed earnings | 1,124 | 42,207
Earnings attributable to participating preferred shareholders | 5 | 166
Earnings attributable to common shareholders | $ 1,119 | $ 42,041
Weighted average common shares outstanding (in shares) | 9,264 | 9,652
Basic earnings from discontinued operations per common share (in dollars per share) | $ 0.12 | $ 4.36
Discounted Operations, Diluted |  |
Earnings attributable to common shareholders | $ 1,119 | $ 42,041
Add dividends on convertible preferred stock | 20 | 20
Earnings attributable to common stock on a diluted basis | $ 1,139 | $ 42,061
Weighted average common shares outstanding (in shares) | 9,264 | 9,652
Additional shares to be issued related to the equity compensation plan (in shares) | 2 | 3
Additional shares to be issued under full conversion of preferred stock (in shares) | 67 | 67
Total shares for diluted (in shares) | 9,333 | 9,722
Diluted earnings from discontinued operations per share (in dollars per share) | $ 0.12 | $ 4.33

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