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Composition of Certain Financial Statement Captions (Tables)
 9 Months Ended
Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Summary of Property and Equipment
The following table summarizes property and equipment, and the related accumulated depreciation and amortization, at June 30, 2019 and September 30, 2018:
 
June 30,
2019
 
September 30,
2018
 
(In thousands)
Property and equipment
$
177,193

 
$
156,154

Less: accumulated depreciation and amortization
(124,293
)
 
(107,317
)
 
$
52,900

 
$
48,837