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Equity Incentive Plan (Tables) | 12 Months Ended
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Sep. 30, 2017
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract] |
Total Stock Based Compensation Expense | The following table shows total stock-based compensation expense recorded from our stock-based awards as reflected in our Consolidated Statements of Operations:
| Year ended September 30,
| 2017 |  | 2016 |  | 2015
| (in thousands)
Cost of license subscription revenue | $ | 1,379 |  |  | $ | 805 |  |  | $ | 521 |
Cost of support revenue | 5,116 |  |  | 4,593 |  |  | 3,775 |
Cost of professional services revenue | 6,116 |  |  | 5,393 |  |  | 5,871 |
Sales and marketing | 15,373 |  |  | 14,659 |  |  | 14,189 |
Research and development | 13,968 |  |  | 10,174 |  |  | 11,623 |
General and administrative | 34,756 |  |  | 30,372 |  |  | 14,203 |
Total stock-based compensation expense | $ | 76,708 |  |  | $ | 65,996 |  |  | $ | 50,182 |
Restricted Stock And Restricted Stock Unit Grants |
| Shares |  | Weighted Average Grant Date Fair Value |  | Aggregate Intrinsic Value as of September 30, 2017
Restricted stock unit activity for the year ended September 30, 2017 | (in thousands except grant date fair value data)
Balance of nonvested outstanding restricted stock units October 1, 2016 | 3,776 |  |  | $ | 37.30 |  |  |
Granted | 1,946 |  |  | $ | 51.27 |  |  |
Vested | (1,586 | ) |  | $ | 36.05 |  |  |
Forfeited or not earned | (649 | ) |  | $ | 37.83 |  |  |
Balance of nonvested outstanding restricted stock units September 30, 2017 | 3,487 |  |  | $ | 45.57 |  |  | $ | 196,230 |
|  | Restricted Stock Units
Restricted stock unit grants |  | TSR Units (1) |  | Performance-based RSUs (2) |  | Service-based RSUs (3)
|  | (Number of Units in thousands)
Year ended September 30, 2017 |  | 358 |  |  | 325 |  |  | 1,263 |
(1) | The TSR units were granted to our executive officers pursuant to the terms described below.
(2) The performance-based RSUs were issued to employees, our executive officers, our directors and a consultant. Executive officers may earn up to one or, for our CEO, two times the number of time-based RSUs (up to a maximum of 325 thousand shares) if certain performance conditions are met. Of the service-based RSUs, approximately 108 thousand shares will vest in one installment on or about the anniversary of the date of grant. Approximately 217 thousand shares will vest in two substantially equal annual installments on or about the anniversary of the date of grant. All other service-based RSUs will vest in three substantially equal annual installments on or about the anniversary of the date of grant. The performance-based RSUs will vest in three substantially equal installments on the later of November 15, 2017, November 15, 2018 and November 15, 2019, or the date the Compensation Committee determines the extent to which the applicable performance criteria have been achieved. (3) The service-based RSUs were granted to employees, our executive officers and our directors. All service-based RSUs will vest in three substantially equal annual installments on or about the anniversary of the date of grant.
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block] | The significant assumptions used in the Monte Carlo simulation model were as follows:
Average volatility of peer group | 29.3 | %
Risk free interest rate | 0.99 | %
Dividend yield | — | %
Value Of Stock Option And Stock-Based Award Activity |
| Year ended September 30,
| 2017 |  | 2016 |  | 2015
Value of stock option and stock-based award activity | (in thousands)
Total intrinsic value of stock options exercised | $ | — |  |  | $ | 88 |  |  | $ | 182 |
Total fair value of restricted stock unit awards vested | $ | 78,573 |  |  | $ | 63,655 |  |  | $ | 84,189 |

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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