Stock-Based Compensation (Tables)

9 Months Ended

Jun. 30, 2017

Stock-Based Compensation

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	Three-Months Ended				Nine-Months Ended
	June 30,				June 30,
	2017		2016		2017				2016
Weighted-average exercise price per share		n/a		n/a	$	62.64			$	40.26
Weighted-average grant date market value of Woodward stock		n/a		n/a	$	69.45			$	40.26
Expected term (years)		n/a		n/a		6.0	-	8.7		6.3	-	8.7
Estimated volatility		n/a		n/a		31.5%	-	33.7%		34.5%	-	35.1%
Estimated dividend yield		n/a		n/a		0.7%				1.0%
Risk-free interest rate		n/a		n/a		2.2%	-	2.5%		1.7%	-	2.0%

Activity for Stock Option Awards

	Three-Months Ended				Nine-Months Ended
	June 30, 2017				June 30, 2017
	Number of options		Weighted-Average Exercise Price per Share		Number of options		Weighted-Average Exercise Price per Share
Options, beginning balance		5,331	$	39.43		4,944	$	35.35
Options granted		-		n/a		780		62.64
Options exercised		(41)		33.08		(416)		33.74
Options forfeited		(10)		44.85		(28)		43.27
Options, ending balance		5,280		39.47		5,280		39.47

Changes in Nonvested Stock Options

	Three-Months Ended				Nine-Months Ended
	June 30, 2017				June 30, 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		2,076	$	18.58		2,075	$	14.90
Options granted		-		n/a		780		25.05
Options vested		(1)		16.62		(762)		15.26
Options forfeited		(11)		15.74		(29)		14.99
Options outstanding, ending balance		2,064		18.60		2,064		18.60

Stock Options Vested, Or Expected to Vest and Are Exercisable

	Number		Weighted- Average Exercise Price		Weighted- Average Remaining Life in Years		Aggregate Intrinsic Value
Options outstanding		5,280	$	39.47		6.1	$	148,468
Options vested and exercisable		3,216		32.81		4.7		111,835
Options vested and expected to vest		5,192		39.25		6.1		147,107

Changes in Restricted Stock Awards

	Three-Months Ended				Nine-Months Ended
	June 30, 2017				June 30, 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