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Accounts Receivable (Notes)
 3 Months Ended
Jun. 30, 2016
Accounts Receivable, Net [Abstract]  
Accounts Receivable
Accounts Receivable
 
Accounts receivable consists of the following (amounts in thousands):
 
June 30, 2016
 
March 31, 2016
Trade accounts receivable
$
433,766

 
$
289,013

Other
4,135

 
3,710

Total accounts receivable, gross
437,901

 
292,723

Less allowance for doubtful accounts
2,390

 
2,540

Total accounts receivable, net
$
435,511

 
$
290,183