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Segment Information (Tables)
 9 Months Ended
Jan. 31, 2020
Segment Reporting [Abstract]  
Segment Information
The following tables provide financial information by business segments for the periods ended January 31, 2020 and 2019 (in thousands):
 
Domestic
Operations
 
International
Operations
 
Corporate /
Eliminations
 
Total
Three months ended January 31, 2020
 
 
 
 
 
 
 
Revenues from external customers
$
26,699

 
$
7,526

 
$
—

 
$
34,225

Intersegment revenues
302

 
659

 
(961
)
 
—

Earnings (loss) before income taxes
$
(867
)
 
$
513

 
$
(1,897
)
 
$
(2,251
)
Three months ended January 31, 2019
 
 
 
 
 
 
 
Revenues from external customers
$
25,217

 
$
7,155

 
$
—

 
$
32,372

Intersegment revenues
612

 
2,135

 
(2,747
)
 
—

Earnings (loss) before income taxes
$
60

 
$
1,020

 
$
(1,045
)
 
$
35


 
Domestic
Operations
 
International
Operations
 
Corporate /
Eliminations
 
Total
Nine months ended January 31, 2020
 
 
 
 
 
 
 
Revenues from external customers
$
87,570

 
$
25,713

 
$
—

 
$
113,283

Intersegment revenues
3,388

 
2,142

 
(5,530
)
 
—

Earnings (loss) before income taxes
$
1,439

 
$
1,622

 
$
(4,805
)
 
$
(1,744
)
Nine months ended January 31, 2019
 
 
 
 
 
 
 
Revenues from external customers
$
91,909

 
$
19,893

 
$
—

 
$
111,802

Intersegment revenues
1,490

 
3,969

 
(5,459
)
 
—

Earnings (loss) before income taxes
$
6,005

 
$
2,174

 
$
(4,491
)
 
$
3,688