Condensed Consolidated Statements of Stockholders' Deficit (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
Jun. 30, 2021	Jun. 30, 2020
Statement Of Stockholders Equity Parenthetical [Abstract]
Other comprehensive (income) loss, defined benefit plan, after reclassification adjustment, tax	$ 0	$ 0
Other comprehensive income (loss), tax	$ 0	$ 0

Amount of tax expense (benefit) allocated to other comprehensive income (loss).

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+ Details