Pension and Other Postretirement Benefits - Contributions to Plans (Details) - USD ($) $ in Thousands	3 Months Ended
Jun. 30, 2021	Jun. 30, 2020
Retirement Benefits [Abstract]
Contributions made during the period	$ 1,503	$ 875
Contributions expected for the remainder of the fiscal year	4,368	6,306
Total	$ 5,871	$ 7,181

Defined Benefit Plan, Plan Assets, Contributions Expected for Remainder of Fiscal Year

No definition available.

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Namespace Prefix:	pyx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration