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Debt (Tables)
3 Months Ended
Sep. 30, 2017
Debt Disclosure [Abstract]  
Availability Under the Senior Credit Facility
Availability under the senior revolving credit facility at September 30, 2017 was as follows: 
 
September 30,
2017
 
June 30,
2017
 
(In thousands)
Senior revolving credit facility
$
300,000

 
$
300,000

Capacity constraint due to the Senior Leverage Ratio
164,084

 
169,092

Capacity under the credit facility
135,916

 
130,908

Borrowings outstanding
42,076

 
44,682

Letters of credit
8,133

 
7,825

Availability under the senior revolving credit facility
$
85,707

 
$
78,401