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Stockholders' Equity (Tables) | 6 Months Ended
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Sep. 30, 2017
Stockholders' Equity Note [Abstract] |
Schedule of Stockholders Equity | The following table represents changes in stockholders' equity for the six months ended September 30, 2017 (dollars in thousands):
|  |  |  |  | Additional paid-in capital |  | Retained earnings |  | Accumulated other comprehensive income |  | Total
| Common Stock |  |  |  |
| Shares |  | Amount |  |  |  |
Balance, April 1, 2017 | 8,994,968 |  |  | $ | 90 |  |  | $ | 244,791 |  |  | $ | 148,141 |  |  | $ | 1,386 |  |  | $ | 394,408 |
Cumulative effect of implementing ASU 2016-09 | — |  |  | — |  |  | — |  |  | 69 |  |  | — |  |  | 69 |
Stock option exercises, including incremental tax benefits | 32,626 |  |  | — |  |  | (1,583 | ) |  |  |  |  | — |  |  | (1,583 | )
Share-based compensation | — |  |  | — |  |  | 1,535 |  |  | — |  |  | — |  |  | 1,535 |
Net income | — |  |  | — |  |  | — |  |  | 17,935 |  |  | — |  |  | 17,935 |
Unrealized loss on available-for-sale securities | — |  |  | — |  |  | — |  |  | — |  |  | 604 |  |  | 604 |
Balance, September 30, 2017 | 9,027,594 |  |  | $ | 90 |  |  | $ | 244,743 |  |  | $ | 166,145 |  |  | $ | 1,990 |  |  | $ | 412,968 |
(1) | Other comprehensive income is comprised of unrealized gains and losses on available-for-sale investments. Unrealized gains before tax effect on available-for-sale securities were $983,000 for the six months ended September 30, 2017.

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- Definition Tabular disclosure of changes in the separate accounts comprising stockholders' equity (in addition to retained earnings) and of the changes in the number of shares of equity securities during at least the most recent annual fiscal period and any subsequent interim period presented is required to make the financial statements sufficiently informative if both financial position and results of operations are presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 + Details
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- References No definition available. + Details
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