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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified | Preferred Stock Convertible | Common Stock | Additional Paid-In Capital | Retained Earnings | Other Comprehensive Gain (Loss) | Total
--- | --- | --- | --- | --- | --- | ---
Balance at Mar. 31, 2010 | $ 9 | $ 23 | $ 2,628 | $ 94,305 | $ (108) | $ 96,857
Balance (in shares) at Mar. 31, 2010 | 3 | 22,990 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Issuance of common stock from exercise of stock options |  |  | 340 |  |  | 340
Issuance of common stock from exercise of stock options (in shares) |  | 46 |  |  |  |
Issuance of restricted stock, net |  |  |  |  |  |
Issuance of restricted stock, net (in shares) |  | 86 |  |  |  |
Share based compensation |  |  | 2,171 |  |  | 2,171
Dividends declared |  |  |  | (10,822) |  | (10,822)
Repurchased and retired shares |  | (1) | (12,246) |  |  | (12,247)
Repurchased and retired shares (in shares) |  | (791) |  |  |  |
Deferred tax adjustment related to restricted stock |  |  | (132) |  |  | (132)
Allocation of retirement of repurchased shares of additional paid in capital and retained earnings |  |  | 7,239 | (7,239) |  |
Net income |  |  |  | 20,871 | 20,871 | 20,871
Other comprehensive gain/loss: |  |  |  |  |  |
Net Change in unrealized loss on short term investments |  |  |  |  | (31) | (31)
Net Change in unrealized loss on long term investments |  |  |  |  | (2) | (2)
Total comprehensive income |  |  |  |  | 20,838 | 20,838
Balance at Mar. 31, 2011 | 9 | 22 |  | 97,115 | (141) | 97,005
Balance (in shares) at Mar. 31, 2011 | 3 | 22,331 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Issuance of restricted stock, net |  |  |  |  |  |
Issuance of restricted stock, net (in shares) |  | 91 |  |  |  |
Share based compensation |  |  | 2,246 |  |  | 2,246
Dividends declared |  |  |  | (10,989) |  | (10,989)
Repurchased and retired shares |  | (2) | (23,683) |  |  | (23,685)
Repurchased and retired shares (in shares) |  | (2,084) |  |  |  |
Deferred tax adjustment related to restricted stock |  |  | (240) |  |  | (240)
Allocation of retirement of repurchased shares of additional paid in capital and retained earnings |  |  | 21,677 | (21,677) |  |
Net income |  |  |  | 16,659 | 16,659 | 16,659
Other comprehensive gain/loss: |  |  |  |  |  |
Net Change in unrealized loss on short term investments |  |  |  |  | 75 | 75
Net Change in unrealized loss on long term investments |  |  |  |  | 110 | 110
Total comprehensive income |  |  |  |  | 16,844 | 16,844
Balance at Mar. 31, 2012 | 9 | 20 |  | 81,108 | 44 | 81,181
Balance (in shares) at Mar. 31, 2012 | 3 | 20,338 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Issuance of restricted stock, net |  |  |  |  |  |
Issuance of restricted stock, net (in shares) |  | 168 |  |  |  |
Share based compensation |  |  | 1,943 |  |  | 1,943
Dividends declared |  |  |  | (32,080) |  | (32,080)
Repurchased and retired shares |  |  | (3,865) |  |  | (3,865)
Repurchased and retired shares (in shares) |  | (397) |  |  |  |
Deferred tax adjustment related to restricted stock |  |  | (284) |  |  | (284)
Allocation of retirement of repurchased shares of additional paid in capital and retained earnings |  |  | 2,206 | (2,206) |  |
Net income |  |  |  | 17,165 | 17,165 | 17,165
Other comprehensive gain/loss: |  |  |  |  |  |
Net Change in unrealized loss on short term investments |  |  |  |  | (46) | (46)
Total comprehensive income |  |  |  |  | 17,119 | 17,119
Balance at Mar. 31, 2013 | $ 9 | $ 20 |  | $ 63,987 | $ (2) | $ 64,014
Balance (in shares) at Mar. 31, 2013 | 3 | 20,109 |  |  |  |

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