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Long-Term Debt - Outstanding Long-Term Debt (Detail) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
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Debt Instrument [Line Items] |  |  |  |
Total long-term debt |  | $ 230,100 |  | $ 205,200
Capital lease obligation |  | 1,712 |  | 2,070
Total Long-term debt |  | 231,403 |  | 206,816
Less: current maturities |  | (9,389) |  | (9,421)
Less: debt issuance costs |  | (418) |  | (433)
Total long-term debt, net of current maturities |  | 222,014 |  | 197,395
9.08% bond, due June 1, 2022 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total long-term debt | [1] | 7,983 |  | 7,982
5.50% note, due October 12, 2020 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total long-term debt |  | 6,000 |  | 6,000
5.93% note, due October 31, 2023 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total long-term debt |  | 18,000 |  | 18,000
5.68% note, due June 30, 2026 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total long-term debt |  | 26,100 |  | 26,100
Uncollateralized Senior Notes Due On May Two Thousand Twenty Eight [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total long-term debt |  | 7,000 |  | 7,000
Uncollateralized Senior Note Two Due on December Two Thousand Twenty Eight [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total long-term debt |  | 20,000 |  | 20,000
Uncollateralized Senior Notes Due On Two Thousand Twenty Nine [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total long-term debt |  | 50,000 |  | 50,000
3.25% note, due April 30, 2032 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total long-term debt |  | 70,000 |  | 70,000
Revolving Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total long-term debt |  | 25,000 | [2] | 0
Promissory note [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total long-term debt |  | $ 26 |  | $ 97
[1] | FPU secured first mortgage bonds are guaranteed by Chesapeake Utilities.
[2] | FPU secured first mortgage bonds are guaranteed by Chesapeake Utilities.(2) In January 2018, we borrowed an additional $25.0 million under the Revolver, which we classified as long-term debt. The maturity date of the Revolver is October 8, 2020. The interest rate on the Revolver is a variable interest rate that is dependent on various factors and resets every thirty days. As of March 31, 2018, the interest rate on the Revolver was LIBOR + 1.00% or 2.88%.

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- Definition Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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