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Fair Value of Financial Instruments (Tables) | 3 Months Ended
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Mar. 31, 2016
Fair Value Disclosures [Abstract] |
Carrying Value and Fair Value of Long-Term Debt | The following table sets forth carrying value and fair value of long-term debt:
|  | March 31, 2016 |  |  | December 31, 2015 |
In thousands |  | Carrying Value |  |  | Fair Value |  |  | Carrying Value |  |  | Fair Value |
Variable rate debt |  | $ | 61,482 |  |  | $ | 61,482 |  |  | $ | 58,792 |  |  | $ | 58,792 |
Fixed-rate bonds |  |  | 250,000 |  |  |  | 248,438 |  |  |  | 250,000 |  |  |  | 250,938 |
2.40% Term loan |  |  | 10,166 |  |  |  | 9,911 |  |  |  | 10,109 |  |  |  | 10,535 |
2.05% Term loan |  |  | 42,539 |  |  |  | 40,483 |  |  |  | 42,130 |  |  |  | 42,886 |
1.55% Term loan |  |  | 2,969 |  |  |  | 2,496 |  |  |  | 2,839 |  |  |  | 2,524 |
Total |  | $ | 367,156 |  |  | $ | 362,810 |  |  | $ | 363,870 |  |  | $ | 365,675 |

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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13476-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13467-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6447952&loc=d3e13220-108610 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611 + Details
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