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Debt (Tables)
3 Months Ended
Sep. 30, 2018
Debt Disclosure [Abstract]  
Availability Under the Senior Credit Facility
Availability under the senior secured revolving credit facility at September 30, 2018 was as follows: 
 
September 30,
2018
 
June 30,
2018
 
(In thousands)
Senior secured revolving credit facility
$
300,000

 
$
300,000

Capacity constraint due to the Leverage Ratio
206,208

 
189,741

Capacity under the credit facility
93,792

 
110,259

Borrowings outstanding
1,549

 

Letters of credit
37,684

 
37,073

Availability under the senior secured revolving credit facility
$
54,559

 
$
73,186