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STOCK BASED COMPENSATION (Tables) | 12 Months Ended
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Aug. 31, 2019
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, 2019 |  | August 31, |  | August 31,
﻿ |  | (including shares originally authorized for issuance under prior plans) |  | 2019 |  | 2018
﻿2013 Plan |  | 827,250 |  |  | 464,424 |  |  | 566,324
﻿
Summary of Components of Stock-Based Compensation Expense |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | Years Ended August 31,
﻿ |  | 2019 |  | 2018 |  | 2017
﻿Options granted to directors |  | $ | — |  | $ | — |  | $ | 18
﻿Restricted stock awards |  |  | 11,477 |  |  | 7,476 |  |  | 7,301
﻿Restricted stock units |  |  | 2,820 |  |  | 2,742 |  |  | 2,370
﻿Performance based restricted stock units |  |  | 764 |  |  | — |  |  | —
﻿Stock-based compensation expense |  | $ | 15,061 |  | $ | 10,218 |  | $ | 9,689
﻿
Summary of Other Information Related to Stock-Based Compensation | ﻿ ﻿ ﻿
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﻿ |  | Balance as of
﻿ |  | August 31, |  |  | August 31, |  | August 31,
﻿ |  | 2019 |  |  | 2018 |  | 2017
﻿Remaining unrecognized compensation cost (in thousands) |  | $ | 21,116 |  |  | $ | 29,473 |  | $ | 26,382
﻿Weighted average period of time over which this cost will be recognized (years) |  |  | 3 |  |  |  | 3 |  |  | 3
﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |
﻿ |  | Years Ended
﻿ |  | August 31, |  |  | August 31, |  | August 31,
﻿ |  | 2019 |  |  | 2018 |  | 2017
﻿Excess tax benefit (deficiency) on stock-based compensation (in thousands) |  | $ | (1,829) |  |  | $ | 530 | (1) | $ | 165
﻿
| (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.
Summary of Restricted Stock Awards and Units Activity |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | Years Ended
﻿ |  | August 31, |  | August 31, |  | August 31,
﻿ |  | 2019 |  | 2018 |  | 2017
﻿Grants outstanding at beginning of period |  |  | 385,417 |  |  | 404,368 |  |  | 509,880
﻿Granted |  |  | 193,489 |  |  | 132,031 |  |  | 56,724
﻿Forfeited |  |  | (16,127) |  |  | (23,119) |  |  | (40,023)
﻿Vested |  |  | (199,953) |  |  | (127,863) |  |  | (122,213)
﻿Grants outstanding at end of period |  |  | 362,826 |  |  | 385,417 |  |  | 404,368
﻿
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 |  | 2019 |  | 2018 |  | 2017
﻿RSAs, RSUs, and PSUs granted |  | $ | 65.11 |  | $ | 84.83 |  | $ | 87.43
﻿RSAs, RSUs, and PSUs vested |  | $ | 79.28 |  | $ | 79.36 |  | $ | 77.85
﻿RSAs, RSUs, and PSUs forfeited |  | $ | 75.02 |  | $ | 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,
﻿ |  | 2019 |  | 2018 |  | 2017
﻿Total fair market value of RSAs, RSUs, and PSUs vested (in thousands) |  | $ | 12,302 |  | $ | 10,886 |  | $ | 10,135
﻿
Summary of Shares Repurchased |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | Years Ended
﻿ |  | August 31, |  | August 31, |  | August 31,
﻿ |  | 2019 |  | 2018 |  | 2017
﻿Shares repurchased |  |  | 75,462 |  |  | 37,414 |  |  | 38,634
﻿Cost of repurchase of shares (in thousands) |  | $ | 4,604 |  | $ | 3,183 |  | $ | 3,193
﻿
Summary of Treasury Shares Reissued |
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﻿ |  |  |  |  |  |  |  |  |
﻿ |  | Years Ended
﻿ |  | August 31, |  | August 31, |  | August 31,
﻿ |  | 2019 |  | 2018 |  | 2017
﻿Reissued treasury shares |  |  | 63,130 |  |  | — |  |  | —
﻿

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