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Consolidated Statements of Stockholders' Equity (USD $) | Common Stock [Member] | Employee Loans [Member] | Retained Earnings [Member] | Total
--- | --- | --- | --- | ---
Balance as of at Mar. 31, 2011 | $ 7,180,000 | $ (437,000) | $ 29,674,000 | $ 36,417,000
Balance as of (in Shares) at Mar. 31, 2011 | 3,250,736 |  |  |
Common stock issued for conversion of stock options net of shares returned as payment | 1,277,000 | 41,000 |  | 1,318,000
Common stock issued for conversion of stock options net of share returned as payment (in Shares) | 88,043 |  |  | 100,677
Purchase and retirement of common stock | (60,000) |  | (537,000) | (597,000)
Purchase and retirement of common stock (in Shares) | (16,814) |  |  |
Dividends paid |  |  | (1,645,000) | (1,645,000)
Stock-based compensation | 441,000 |  |  | 441,000
Tax benefit on exercise of stock options | 62,000 |  |  | 62,000
Net income |  |  | 7,919,000 | 7,919,000
Balance as of at Mar. 31, 2012 | 8,900,000 | (396,000) | 35,411,000 | 43,915,000
Balance as of (in Shares) at Mar. 31, 2012 | 3,321,965 |  |  |
Common stock issued for conversion of stock options net of shares returned as payment | 1,101,000 | (203,000) |  | 898,000
Common stock issued for conversion of stock options net of share returned as payment (in Shares) | 77,753 |  |  | 93,325
Purchase and retirement of common stock | (56,000) | 450,000 | (496,000) | (102,000)
Purchase and retirement of common stock (in Shares) | (11,170) |  |  |
Dividends paid |  |  | (1,815,000) | (1,815,000)
Stock-based compensation | 1,112,000 |  |  | 1,112,000
Tax benefit on exercise of stock options | 295,000 |  |  | 295,000
Net income |  |  | 8,450,000 | 8,450,000
Balance as of at Mar. 31, 2013 | 11,352,000 | (149,000) | 41,550,000 | 52,753,000
Balance as of (in Shares) at Mar. 31, 2013 | 3,388,548 |  |  | 3,388,548
Common stock issued for conversion of stock options net of shares returned as payment | 1,845,000 |  |  | 1,845,000
Common stock issued for conversion of stock options net of share returned as payment (in Shares) | 104,864 |  |  | 117,885
Purchase and retirement of common stock | (147,000) | 125,000 |  | (22,000)
Purchase and retirement of common stock (in Shares) | (2,784) |  |  |
Dividends paid |  |  | (1,989,000) | (1,989,000)
Stock-based compensation | 840,000 |  |  | 840,000
Tax benefit on exercise of stock options | 1,906,000 |  |  | 1,906,000
Net income |  |  | 9,000,000 | 9,000,000
Balance as of at Mar. 31, 2014 | $ 15,796,000 | $ (24,000) | $ 48,561,000 | $ 64,333,000
Balance as of (in Shares) at Mar. 31, 2014 | 3,490,628 |  |  | 3,490,628

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