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Note 5 - Retirement Plans | 6 Months Ended
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Jun. 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 six-month periods ended June 30, 2014 and 2013, respectively (in thousands):
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2014 |  |  | 2013 |  |  | 2014 |  |  | 2013 |
Service cost |  | $ | 1,300 |  |  | $ | 1,325 |  |  | $ | 2,644 |  |  | $ | 2,649 |
Interest cost |  |  | 1,034 |  |  |  | 917 |  |  |  | 2,103 |  |  |  | 1,834 |
Expected return on plan assets |  |  | (1,057 | ) |  |  | (830 | ) |  |  | (2,151 | ) |  |  | (1,659 | )
Loss amortization |  |  | 244 |  |  |  | 742 |  |  |  | 496 |  |  |  | 1,484 |
Net periodic benefit cost |  | $ | 1,521 |  |  | $ | 2,154 |  |  | $ | 3,092 |  |  | $ | 4,308 |
During the six-month period ended June 30, 2014, we contributed $2.7 million to our pension plans. During the remainder of the year ending December 31, 2014, we expect to contribute an additional $3.4 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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