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Subsequent Events (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		12 Months Ended
	Jan. 12, 2020	Dec. 31, 2019	Dec. 31, 2018	Sep. 30, 2019	Jan. 31, 2020	Jan. 29, 2020
Subsequent Event [Line Items]
Par value per share		$ 0.001455		$ 0.001455
Dividend, declared date		Jan. 29, 2020
Dividend, payable date		Mar. 03, 2020
Dividend, record date		Feb. 18, 2020
Net sales		$ 720,355	$ 652,811
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividend per share						$ 0.28
Hexcel Merger [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Shares converted of common stock of Woodward	0.6250
Hexcel Merger [Member] \| Hexcel Common Stock [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Par value per share	$ 0.01
Renewable Power Systems [Member]
Subsequent Event [Line Items]
Net sales				$ 80,000
AURELIUS Group [Member] \| Renewable Power Systems [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Purchase price					$ 23,400
Promissory note					$ 6,000