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Benefit Plans | 6 Months Ended
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Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract] |
BENEFIT PLANS | BENEFIT PLANS We sponsor several defined benefit pension plans. Additionally, we provide varying levels of postretirement health care and life insurance benefits to some U.S. employees. During the quarter we recognized a special termination benefit charge of $0.5 million and a curtailment loss of $0.4 million for one of our U.S.-based defined benefit pension plans resulting from a plant closure. The special termination benefit charge was recognized in restructuring expense. The table below summarizes the components of net periodic pension income:
| Three Months Ended December 31, |  | Six Months Ended December 31,
(in thousands) | 2014 |  |  | 2013 |  |  | 2014 |  |  | 2013 |
Service cost | $ | 1,384 |  |  | $ | 1,732 |  |  | $ | 2,799 |  |  | $ | 3,448 |
Interest cost | 9,745 |  |  | 10,308 |  |  | 19,681 |  |  | 20,484 |
Expected return on plan assets | (14,900 | ) |  | (14,916 | ) |  | (29,947 | ) |  | (29,712 | )
Amortization of transition obligation | 19 |  |  | 20 |  |  | 40 |  |  | 38 |
Amortization of prior service credit | (71 | ) |  | (58 | ) |  | (141 | ) |  | (117 | )
Recognition of actuarial losses | 937 |  |  | 670 |  |  | 1,937 |  |  | 1,312 |
Curtailment loss | 358 |  |  | — |  |  | 358 |  |  | — |
Special termination benefit charge | 459 |  |  | — |  |  | 459 |  |  | — |
Net periodic pension income | $ | (2,069 | ) |  | $ | (2,244 | ) |  | $ | (4,814 | ) |  | $ | (4,547 | )
The table below summarizes the components of the net periodic other postretirement benefit cost:
| Three Months Ended December 31, |  | Six Months Ended December 31,
(in thousands) | 2014 |  |  | 2013 |  |  | 2014 |  |  | 2013 |
Service cost | $ | 27 |  |  | $ | 14 |  |  | $ | 54 |  |  | $ | 28 |
Interest cost | 259 |  |  | 251 |  |  | 519 |  |  | 502 |
Amortization of prior service credit | (28 | ) |  | (28 | ) |  | (55 | ) |  | (56 | )
Recognition of actuarial loss | 207 |  |  | 79 |  |  | 414 |  |  | 158 |
Curtailment gain | (221 | ) |  | — |  |  | (221 | ) |  | — |
Net periodic other postretirement benefit cost | $ | 244 |  |  | $ | 316 |  |  | $ | 711 |  |  | $ | 632 |
The curtailment gain of $0.2 million was a result of the plant closure discussed above.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e2410-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=35742057&loc=SL14450702-114947 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414199&loc=d3e39622-114963 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39675-114964 + Details
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