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Postretirement Benefits
 3 Months Ended
Sep. 30, 2015
Postretirement Benefits [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Postretirement Benefits
Postretirement Benefits
We and certain of our operating subsidiaries provide multiple postretirement medical and life insurance benefit plans. We recognize the cost of benefits as the employees render service. Postretirement benefits are funded as incurred.
The following table summarizes the components of net periodic benefit cost for our postretirement plans:
 
Three Months Ended 
 September 30,
 
2015
 
2014
Components of net periodic benefit cost
 
 
 
Service cost
$
7

 
$
8

Interest cost
30

 
27

Amortization of unrecognized net gain
(4
)
 
(7
)
Amortization of prior service asset
(1
)
 
(1
)
Net periodic benefit cost
$
32

 
$
27


For the three months ended September 30, 2015, we made $29,000 in contributions to our postretirement medical and life insurance benefit plans. We expect to make approximately $0.1 million more in contributions to our postretirement medical and life insurance benefit plans during the remainder of 2016.