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Segment Information (Tables)
3 Months Ended
Jul. 31, 2021
Segment Reporting [Abstract]  
Segment Information The following tables provide financial information by business segments for the periods ended July 31, 2021 and 2020 (in thousands):
Domestic
Operations
International
Operations
Corporate /
Eliminations
Total
Three months ended July 31, 2021
Revenues from external customers$29,663 $9,830 $— $39,493 
Intersegment revenues175 565 (740)— 
Earnings (loss) before income taxes(209)664 (1,511)(1,056)
Three months ended July 31, 2020
Revenues from external customers$30,058 $6,365 $— $36,423 
Intersegment revenues651 811 (1,462)— 
Earnings (loss) before income taxes993 135 (1,715)(587)