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Stock-Based Compensation (Tables) | 6 Months Ended
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Mar. 31, 2017
Stock-Based Compensation |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
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﻿ | Three-Months Ended |  | Six-Months Ended
﻿ | March 31, |  | March 31,
﻿ | 2017 |  | 2016 |  | 2017 |  | 2016
﻿Weighted-average exercise price per share | $ | 62.64 |  |  |  | n/a |  |  | $ | 62.64 |  |  | $ | 40.26 |
﻿Weighted-average grant date market value of Woodward stock | $ | 69.45 |  |  |  | n/a |  |  | $ | 69.45 |  |  | $ | 40.26 |
﻿Expected term (years) |  | 6.0 | - | 8.7 |  |  |  | n/a |  |  |  | 6.0 | - | 8.7 |  |  |  | 6.3 | - | 8.7 |
﻿Estimated volatility |  | 31.5% | - | 33.7% |  |  |  | n/a |  |  |  | 31.5% | - | 33.7% |  |  |  | 34.5% | - | 35.1% |
﻿Estimated dividend yield |  | 0.7% |  |  |  | n/a |  |  |  | 0.7% |  |  |  | 1.0% |
﻿Risk-free interest rate |  | 2.2% | - | 2.5% |  |  |  | n/a |  |  |  | 2.2% | - | 2.5% |  |  |  | 1.7% | - | 2.0% |
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Activity for Stock Option Awards |
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﻿ |  | Three-Months Ended |  | Six-Months Ended
﻿ |  | March 31, 2017 |  | March 31, 2017
﻿ |  | Number of options |  | Weighted-Average Exercise Price per Share |  | Number of options |  | Weighted-Average Exercise Price per Share
﻿Options, beginning balance |  |  | 4,792 |  | $ | 35.35 |  |  | 4,944 |  | $ | 35.35
﻿Options granted |  |  | 780 |  |  | 62.64 |  |  | 780 |  |  | 62.64
﻿Options exercised |  |  | (236) |  |  | 33.21 |  |  | (375) |  |  | 33.81
﻿Options forfeited |  |  | (5) |  |  | 42.73 |  |  | (18) |  |  | 42.34
﻿Options, ending balance |  |  | 5,331 |  |  | 39.43 |  |  | 5,331 |  |  | 39.43
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Changes in Nonvested Stock Options |
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﻿ |  | Three-Months Ended |  | Six-Months Ended
﻿ |  | March 31, 2017 |  | March 31, 2017
﻿ |  | Number of options |  | Weighted-Average Grant Date Fair Value per Share |  | Number of options |  | Weighted-Average Grant Date Fair Value per Share
﻿Options outstanding, beginning balance |  |  | 1,304 |  | $ | 14.70 |  |  | 2,075 |  | $ | 14.90
﻿Options granted |  |  | 780 |  |  | 25.05 |  |  | 780 |  |  | 25.05
﻿Options vested |  |  | (3) |  |  | 18.27 |  |  | (761) |  |  | 15.25
﻿Options forfeited |  |  | (5) |  |  | 14.77 |  |  | (18) |  |  | 14.56
﻿Options outstanding, ending balance |  |  | 2,076 |  |  | 18.58 |  |  | 2,076 |  |  | 18.58
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Stock Options Vested, Or Expected to Vest and Are Exercisable |
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﻿ |  | Number |  | Weighted- Average Exercise Price |  | Weighted- Average Remaining Life in Years |  | Aggregate Intrinsic Value
﻿Options outstanding |  |  | 5,331 |  | $ | 39.43 |  |  | 6.4 |  | $ | 151,901
﻿Options vested and exercisable |  |  | 3,254 |  |  | 32.80 |  |  | 5.0 |  |  | 114,271
﻿Options vested and expected to vest |  |  | 5,224 |  |  | 39.18 |  |  | 6.3 |  |  | 150,155
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Changes in Restricted Stock Awards |
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﻿ |  | Three-Months Ended |  | Six-Months Ended
﻿ |  | March 31, 2017 |  | March 31, 2017
﻿ |  |  | Number |  |  | Fair Value per Share |  |  | Number |  |  | Fair Value per Share
﻿Beginning balance |  |  | 24 |  | $ | 39.43 |  |  | 24 |  | $ | 39.43
﻿Shares granted |  |  | - |  |  | n/a |  |  | - |  |  | n/a
﻿Shares vested |  |  | - |  |  | n/a |  |  | - |  |  | n/a
﻿Shares forfeited |  |  | - |  |  | n/a |  |  | - |  |  | n/a
﻿Ending balance |  |  | 24 |  |  | 39.43 |  |  | 24 |  |  | 39.43
﻿

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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + 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 (c)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (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=6415400&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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- Definition Tabular disclosure of the change in stock options. + References No definition available. + Details
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- Definition Tabular disclosure of the number of fully vested share options (or share units) and share options expected to vest at the date of the latest statement of financial position, weighted-average exercise price (or conversion ratio), aggregate intrinsic value (except for nonpublic entities), and weighted-average remaining contractual term for both options (or share units) currently outstanding and options (or share units) exercisable (or convertible). + 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 (e) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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