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Retirement Benefit Plans
 9 Months Ended
Mar. 31, 2013
Retirement Benefit Plans  
Retirement Benefit Plans

6. Retirement Benefit Plans

 

The Company sponsors various retirement benefit plans including qualified and nonqualified defined benefit pension plans for its employees. The components of net periodic pension expense are as follows (in thousands):

 

 

 

Three Months Ended
March 31,

 

Nine Months Ended
March 31,

 

 

 

2012

 

2013

 

2012

 

2013

 

Service cost

 

$

160

 

$

269

 

$

515

 

$

853

 

Amortization of prior service cost

 

112

 

229

 

336

 

689

 

Net periodic pension expense

 

$

272

 

$

498

 

$

851

 

$

1,542

 

 

For the three months ended March 31, 2012 and 2013, the Company made contributions of $0.5 million and $0.1 million, respectively to these defined benefit plans. For the nine months ended March 31, 2012 and 2013, the Company made contributions of $0.6 million and $0.1 million, respectively, to these defined benefit plans.

 

In addition, the Company maintains various defined contribution plans. For both the three months ended March 31, 2012 and 2013, the Company made contributions of $0.9 million to these defined contribution plans. For the nine months ended March 31, 2012 and 2013, the Company made contributions of $3.0 million and $2.7 million, respectively, to these defined contribution plans.