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Consolidated Statements of Shareholders' Equity - USD ($) | Stock Compensation Plan [Member] Common Stock Including Additional Paid in Capital [Member] | Stock Compensation Plan [Member] | Restricted Stock Units (RSUs) [Member] Common Stock Including Additional Paid in Capital [Member] | Restricted Stock Units (RSUs) [Member] | Common Stock Including Additional Paid in Capital [Member] | Key Executive Deferred Compensation [Member] | Retained Earnings [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balance (in shares) at Jun. 30, 2014 |  |  |  |  | 24,430,000 | (307,000) |  |
Balance at Jun. 30, 2014 |  |  |  |  | $ 106,979,000 | $ (2,915,000) | $ 34,348,000 | $ 138,412,000
Net income |  |  |  |  |  |  | 5,151,000 | 5,151,000
Stock compensation awards (in shares) |  |  |  |  | 27,000 |  |  |
Stock compensation awards |  |  |  |  | $ 191,000 |  |  | 191,000
Distribution of treasury shares, net (in shares) |  |  |  |  |  | 80,000 |  |
Distribution of treasury shares, net |  |  |  |  |  | $ 770,000 |  | 770,000
Deferred compensation plan |  |  |  |  | (761,000) |  |  | (761,000)
Stock option expense |  |  |  |  | $ 1,239,000 |  |  | $ 1,238,897
Stock options exercised, net (in shares) |  |  |  |  | 163,000 |  |  | 163,076
Stock options exercised, net |  |  |  |  | $ 850,000 |  |  | $ 850,000
Dividends |  |  |  |  |  |  | (2,900,000) | (2,900,000)
Balance (in shares) at Jun. 30, 2015 |  |  |  |  | 24,620,000 | (227,000) |  |
Balance at Jun. 30, 2015 |  |  |  |  | $ 108,498,000 | $ (2,145,000) | 36,599,000 | 142,952,000
Net income |  |  |  |  |  |  | 9,482,000 | 9,482,000
Stock compensation awards (in shares) | 23,000 |  | 5,000 |  |  |  |  |
Stock compensation awards | $ 248,000 | $ 248,000 |  |  |  |  |  |
Purchase of treasury shares, net (in shares) |  |  |  |  |  | (1,000) |  |
Purchase of treasury shares, net |  |  |  |  |  | $ (23,000) |  | (23,000)
Deferred compensation plan |  |  |  |  | 151,000 |  |  | 151,000
Stock option expense |  |  |  |  |  |  |  | 2,519,092
Stock-based compensation expense |  |  |  |  | $ 2,903,000 |  |  | $ 2,903,000
Stock options exercised, net (in shares) |  |  |  |  | 562,000 |  |  | 561,946
Stock options exercised, net |  |  |  |  | $ 4,021,000 |  |  | $ 4,021,000
Dividends |  |  |  |  |  |  | (4,214,000) | (4,214,000)
Balance (in shares) at Jun. 30, 2016 |  |  |  |  | 25,210,000 | (228,000) |  |
Balance at Jun. 30, 2016 |  |  |  |  | $ 115,821,000 | $ (2,168,000) | 41,867,000 | 155,520,000
Net income |  |  |  |  |  |  | 3,000,000 | 3,000,000
Stock compensation awards (in shares) | 40,000 |  | 25,000 |  |  |  |  |
Stock compensation awards | $ 409,000 | $ 409,000 |  |  |  |  |  |
Stock Warrants Issued |  |  |  |  | 575,000 |  |  | 575,000
Purchase of treasury shares, net (in shares) |  |  |  |  |  | (30,000) |  |
Purchase of treasury shares, net |  |  |  |  |  | $ (276,000) |  | (276,000)
Deferred compensation plan |  |  |  |  | 237,000 |  |  | 237,000
Stock option expense |  |  |  |  |  |  |  | 2,478,861
Stock-based compensation expense |  |  |  |  | $ 3,049,000 |  |  | $ 3,049,000
Stock options exercised, net (in shares) |  |  |  |  | 412,000 |  |  | 486,446
Stock options exercised, net |  |  |  |  | $ 2,612,000 |  |  | $ 2,612,000
Dividends |  |  |  |  |  |  | (5,048,000) | (5,048,000)
Balance (in shares) at Jun. 30, 2017 |  |  |  |  | 25,687,000 | (258,000) |  |
Balance at Jun. 30, 2017 |  |  |  |  | $ 122,703,000 | $ (2,444,000) | $ 39,819,000 | $ 160,078,000

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