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STOCK BASED COMPENSATION (Tables) | 12 Months Ended
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Aug. 31, 2018
STOCK BASED COMPENSATION [Abstract] |
Summary of Shares Authorized and Shares Available for Future Grants |
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﻿ |  |  |  |  |  |  |  |
﻿ |  |  |  | Shares available to grant
﻿ |  | Shares authorized for issuance as of August 31, 2018 |  | August 31, |  | August 31,
﻿ |  | (including shares originally authorized for issuance under prior plans) |  | 2018 |  | 2017
﻿2013 Plan |  | 951,741 |  |  | 566,324 |  |  | 637,822
﻿
Summary of Components of Stock-Based Compensation Expense |
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﻿ |  |  |  |  |  |  |  |  |
﻿ |  | Years Ended August 31,
﻿ |  | 2018 |  | 2017 |  | 2016
﻿Options granted to directors |  | $ | — |  | $ | 18 |  | $ | 72
﻿Restricted stock awards |  |  | 7,476 |  |  | 7,301 |  |  | 7,103
﻿Restricted stock units |  |  | 2,742 |  |  | 2,370 |  |  | 1,946
﻿Stock-based compensation expense |  | $ | 10,218 |  | $ | 9,689 |  | $ | 9,121
﻿
Summary of Other Information Related to Stock-Based Compensation | ﻿ ﻿ ﻿
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﻿ |  | Balance as of
﻿ |  | August 31, |  | August 31, |  | August 31,
﻿ |  | 2018 |  | 2017 |  | 2016
﻿Remaining unrecognized compensation cost (in thousands) |  | $ | 29,473 |  | $ | 26,382 |  | $ | 32,380
﻿Weighted average period of time over which this cost will be recognized (years) |  |  | 3 |  |  | 3 |  |  | 4
﻿ ﻿
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﻿ |  | Years Ended
﻿ |  | August 31, |  |  | August 31, |  | August 31,
﻿ |  | 2018 |  |  | 2017 |  | 2016
﻿Excess tax benefit (deficiency) on stock-based compensation (in thousands) |  | $ | 530 | (1) |  | $ | 165 |  | $ | 610
﻿
| (1) |  | Beginning in the first quarter of fiscal year 2018, the Company began recording the tax savings resulting from tax deductions in excess of expense for stock-based compensation and the tax deficiencies resulting from stock-based compensation in excess of the related tax deduction as income tax expense or benefit, based on the adoption of ASU 2016-09. See Note 2 – Summary of Significant Accounting Policies for the Company’s explanation of the accounting implications from the adoption of ASU 2016-09.
Summary of Restricted Stock Awards and Units Activity |
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﻿ |  | Years Ended
﻿ |  | August 31, |  | August 31, |  | August 31,
﻿ |  | 2018 |  | 2017 |  | 2016
﻿Grants outstanding at beginning of period |  |  | 404,368 |  |  | 509,880 |  |  | 366,021
﻿Granted |  |  | 132,031 |  |  | 56,724 |  |  | 276,530
﻿Forfeited |  |  | (23,119) |  |  | (40,023) |  |  | (1,372)
﻿Vested |  |  | (127,863) |  |  | (122,213) |  |  | (131,299)
﻿Grants outstanding at end of period |  |  | 385,417 |  |  | 404,368 |  |  | 509,880
﻿
Summary of Weighted Average Per Share Grant Date Fair Value for Restricted Stock Awards and Units |
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﻿ |  |  |  |  |  |  |  |  |
﻿ |  | Years Ended
﻿ |  | August 31, |  | August 31, |  | August 31,
﻿Weighted Average Grant Date Fair Value |  | 2018 |  | 2017 |  | 2016
﻿Restricted stock awards and units granted |  | $ | 84.83 |  | $ | 87.43 |  | $ | 84.69
﻿Restricted stock awards and units vested |  | $ | 79.36 |  | $ | 77.85 |  | $ | 71.19
﻿Restricted stock awards and units forfeited |  | $ | 73.27 |  | $ | 77.19 |  | $ | —
﻿
Summary of Total Fair Market Value of Restricted Stock Awards and Units Vested |
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﻿ |  | Years Ended
﻿ |  | August 31, |  | August 31, |  | August 31,
﻿ |  | 2018 |  | 2017 |  | 2016
﻿Total fair market value of restricted stock awards and units vested (in thousands) |  | $ | 10,886 |  | $ | 10,135 |  | $ | 10,139
﻿
Summary of Shares Repurchased |
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﻿ |  | Years Ended
﻿ |  | August 31, |  | August 31, |  | August 31,
﻿ |  | 2018 |  | 2017 |  | 2016
﻿Shares repurchased |  |  | 37,414 |  |  | 38,634 |  |  | 43,171
﻿Cost of repurchase of shares (in thousands) |  | $ | 3,183 |  | $ | 3,193 |  | $ | 3,334
﻿

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