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Stockholders' Equity K (Tables)

12 Months Ended

Sep. 30, 2018

Stockholders' Equity and Stock-Based Compensation [Abstract]

Dividends Declared and Paid



		Year Ended September 30,
		2018			2017			2016
Dividends declared and paid		$	34,003		$	29,745		$	26,606
Dividend per share amount			0.5525			0.4850			0.4300



Stock-based Compensation Expense Recognized



		Year Ended September 30,
		2018			2017			2016
Employee stock-based compensation expense		$	18,229		$	17,282		$	15,122



Weighted Average Grant Date Fair Value of Options Granted



		Year Ended September 30,
		2018			2017			2016
Weighted-average grant date fair value of options		$	25.66		$	24.98		$	13.39



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



	Year Ended September 30,
	2018						2017					2016
Weighted-average exercise price per share	$	78.91				$	62.74				$	40.26
Weighted-average grant date market value of Woodward stock	$	78.91				$	69.45				$	40.26
Expected term (years)		6.4	-	8.7			6.0	-	8.7			6.3	-	8.7
Estimated volatility		29.1%	-	32.7%			30.6%	-	33.7%			34.5%	-	35.1%
Estimated dividend yield		0.6%	-	0.8%			0.7%					1.0%
Risk-free interest rate		2.1%	-	2.8%			2.0%	-	2.5%			1.7%	-	2.0%



Activity for Stock Option Awards



		Number			Weighted-Average Exercise Price Per Share
Balance at September 30, 2017			5,236		$	39.58
Options granted			750			78.91
Options exercised			(334)			27.34
Options forfeited			(41)			59.64
Balance at September 30, 2018			5,611			45.42



Changes in Nonvested Stock Options



		Number			Weighted-Average Grant Date Fair Value Per Share
Balance at September 30, 2017			2,072		$	18.61
Options granted			750			25.66
Options vested			(793)			17.58
Options forfeited			(41)			20.80
Balance at September 30, 2018			1,988			21.64



Stock Options Vested, Or Expected to Vest and Are Exercisable



		Number			Weighted- Average Exercise Price Per Share			Weighted- Average Remaining Life in Years			Aggregate Intrinsic Value
Options outstanding			5,611		$	45.42			5.6		$	198,843
Options vested and exercisable			3,623			36.50			4.3			160,703
Options vested and expected to vest			5,551			45.17			5.6			198,108



Other Stock Option Information



		Year Ended September 30,
		2018			2017			2016
Total fair value of stock options vested		$	13,944		$	11,639		$	10,374
Total intrinsic value of options exercised			16,690			16,416			23,178
Cash received from exercises of stock options			9,132			14,196			15,892
Excess tax benefit realized from exercise of stock options			3,524			4,383			6,472



Changes in Restricted Stock Awards

Changes in the restricted stock units during the fiscal year ending September 30, 2018 were as follows:

		Number			Fair Value per Share
Balance at September 30, 2017			-			n/a
Shares granted			10			82.71
Shares vested			-			n/a
Shares forfeited			-			n/a
Balance at September 30, 2018			10			82.71



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