Derivative Financial Instruments - Narrative (Details) - USD ($)	3 Months Ended	9 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Gain (loss) recognized in income	$ (729,000)	$ (3,189,000)
Current derivative asset			$ 1,029,000
Derivative contracts outstanding	$ 0	0
Loss on Derivatives
Derivative [Line Items]
Unrealized losses on designated cash flow hedges		241,000	2,307,000
Tax of unrealized losses on designated cash flow hedges		$ (64,000)	$ (613,000)