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Note 4 - Computation of Net Loss per Common Share - Reconciliation of Numerators and Denominators of EPS Calculation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Numerator: |  |  |  |
Net (loss) income | $ (825) | $ 22,558 | $ (4,364) | $ 17,821
Fair Value Adjustment of Warrants | (1,145) |  | (4,092) | 182
Plus: change in fair value due to exercise of warrants | 0 | 0 | 83 | 0
Net income (loss) - diluted | $ (1,970) | $ 22,558 | $ (8,373) | $ 17,821
Denominator: |  |  |  |
Weighted-average shares of common stock outstanding (in shares) | 21,678 | 21,252 | 21,538 | 21,126
Weighted-average shares subject to repurchase (in shares) | (1,022) | (939) | (952) | (886)
Shares used in per-share calculation - basic (in shares) | 20,656 | 20,313 | 20,586 | 20,240
Common stock awards (in shares) | 0 | 268 | 0 | 320
Common stock warrants (in shares) | 67 | 0 | 150 | 0
Shares used in per-share calculation - diluted (in shares) | 20,723 | 20,581 | 20,736 | 20,560
Net (loss) income per share - basic (in dollars per share) | $ (0.04) | $ 1.11 | $ (0.21) | $ 0.88
Net (loss) income per share - diluted (in dollars per share) | $ (0.10) | $ 1.10 | $ (0.40) | $ 0.87

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