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Property and Equipment (Tables)
9 Months Ended
Jun. 30, 2019
Property Plant And Equipment [Abstract]  
Property and Equipment

Property and equipment are stated at cost. Depreciation is computed over the estimated useful lives of the depreciable assets using the straight-line method (in thousands):

 

 

 

June 30,

2019

 

 

September 30,

2018

 

Property and equipment

 

$

226,969

 

 

$

210,581

 

Less: accumulated depreciation

 

 

129,501

 

 

 

122,963

 

Property and equipment, net

 

$

97,468

 

 

$

87,618