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Note 5 - Retirement Plans | 9 Months Ended
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Sep. 30, 2014
Compensation and Retirement Disclosure [Abstract] |
Pension and Other Postretirement Benefits Disclosure [Text Block] | 5. Retirement Plans The following table provides the components of net periodic benefit cost for our pension plans for the three-month and nine-month periods ended September 30, 2014 and 2013, respectively (in thousands):
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | 2014 |  |  | 2013 |  |  | 2014 |  |  | 2013 |
Service cost |  | $ | 1,279 |  |  | $ | 1,291 |  |  | $ | 3,886 |  |  | $ | 3,871 |
Interest cost |  |  | 1,099 |  |  |  | 967 |  |  |  | 3,336 |  |  |  | 2,899 |
Expected return on plan assets |  |  | (1,123 | ) |  |  | (926 | ) |  |  | (3,410 | ) |  |  | (2,774 | )
Loss amortization |  |  | 263 |  |  |  | 824 |  |  |  | 799 |  |  |  | 2,468 |
Net periodic benefit cost |  | $ | 1,518 |  |  | $ | 2,156 |  |  | $ | 4,611 |  |  | $ | 6,464 |
During the nine-month period ended September 30, 2014, we contributed $4.7 million to our pension plans. During the remainder of the year ending December 31, 2014, we expect to contribute an additional $1.3 million to our pension plans.

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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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