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Segment Information (Tables)
 6 Months Ended
Oct. 31, 2019
Segment Reporting [Abstract]  
Segment Information
The following tables provide financial information by business segments for the periods ended October 31, 2019 and 2018 (in thousands):
 
Domestic
Operations
 
International
Operations
 
Corporate /
Eliminations
 
Total
Three months ended October 31, 2019
 
 
 
 
 
 
 
Revenues from external customers
$
31,584

 
$
8,138

 
$
—

 
$
39,722

Intersegment revenues
907

 
641

 
(1,548
)
 
—

Earnings (loss) before income taxes
$
746

 
$
501

 
$
(1,405
)
 
$
(158
)
Three months ended October 31, 2018
 
 
 
 
 
 
 
Revenues from external customers
$
30,622

 
$
6,656

 
$
—

 
$
37,278

Intersegment revenues
416

 
1,108

 
(1,524
)
 
—

Earnings (loss) before income taxes
$
2,837

 
$
705

 
$
(1,782
)
 
$
1,760


 
Domestic
Operations
 
International
Operations
 
Corporate /
Eliminations
 
Total
Six months ended October 31, 2019
 
 
 
 
 
 
 
Revenues from external customers
$
60,871

 
$
18,187

 
$
—

 
$
79,058

Intersegment revenues
3,086

 
1,483

 
(4,569
)
 
—

Earnings (loss) before income taxes
$
2,306

 
$
1,109

 
$
(2,908
)
 
$
507

Six months ended October 31, 2018
 
 
 
 
 
 
 
Revenues from external customers
$
66,692

 
$
12,738

 
$
—

 
$
79,430

Intersegment revenues
878

 
1,834

 
(2,712
)
 
—

Earnings (loss) before income taxes
$
5,945

 
$
1,154

 
$
(3,446
)
 
$
3,653