Contingent Liabilities and Commitments (Table Text Block)

3 Months Ended

Jun. 30, 2018

Operating leases, rental equipment [Abstract]

Lease Commitments for Leases having Terms of More than One Year

		Property, Plant and Equipment				Rental Equipment
		Ground		Operating		Operating		Total
		(Unaudited)
		(In thousands)
Year-ended June 30:
2019	$	1,008	$	17,032	$	7,287	$	25,327
2020		1,024		17,376		428		18,828
2021		1,025		16,213		–		17,238
2022		1,030		15,051		–		16,081
2023		1,030		14,561		–		15,591
Thereafter		49,391		16,579		–		65,970
Total	$	54,508	$	96,812	$	7,715	$	159,035