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Employee Retirement Plans (Tables)
 6 Months Ended
Sep. 30, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of Primary Components of Net Periodic Benefits The primary components of Net Periodic Benefits consist of the following:
Three Months Ended September 30, Six Months Ended September 30,
 (In thousands)2020201920202019
Interest cost$525 $577 $1,050 $1,154 
Expected return on assets(647)(721)(1,294)(1,442)
Net periodic benefit income$(122)$(144)$(244)$(288)