| Cover Page - USD ($) $ in Billions | 12 Months Ended | ||
| Dec. 31, 2019 | Feb. 20, 2020 | Jun. 30, 2019 | |
| Cover [Abstract] | |||
| Document Type | 10-K/A | ||
| Document Annual Report | true | ||
| Document Period End Date | Dec. 31, 2019 | ||
| Document Transition Report | false | ||
| Entity File Number | 001-11590 | ||
| Entity Registrant Name | Chesapeake Utilities Corp | ||
| Entity Incorporation, State or Country Code | DE | ||
| Entity Tax Identification Number | 51-0064146 | ||
| Entity Address, Address Line One | 909 Silver Lake Boulevard | ||
| Entity Address, City or Town | Dover | ||
| Entity Address, State or Province | DE | ||
| Entity Address, Postal Zip Code | 19904 | ||
| City Area Code | 302 | ||
| Local Phone Number | 734-6799 | ||
| Title of 12(b) Security | Common Stock-par value per share $0.4867 | ||
| Trading Symbol | CPK | ||
| Security Exchange Name | NYSE | ||
| Entity Well-known Seasoned Issuer | Yes | ||
| Entity Voluntary Filers | No | ||
| Entity Current Reporting Status | Yes | ||
| Entity Interactive Data Current | Yes | ||
| Entity Filer Category | Large Accelerated Filer | ||
| Entity Small Business | false | ||
| Entity Emerging Growth Company | false | ||
| Entity Shell Company | false | ||
| Entity Public Float | $ 1.5 | ||
| Entity Common Stock, Shares Outstanding | 16,407,017 | ||
| Documents Incorporated by Reference | Portions of the Proxy Statement for the 2020 Annual Meeting of Stockholders are incorporated by reference in Part II and Part III, which Proxy Statement shall be filed with the Securities and Exchange Commission within 120 days after the end of registrant’s fiscal year ended December 31, 2019. | ||
| Entity Central Index Key | 0000019745 | ||
| Current Fiscal Year End Date | --12-31 | ||
| Document Fiscal Year Focus | 2019 | ||
| Document Fiscal Period Focus | FY | ||
| Amendment Flag | true | ||
| Amendment Description | This Amendment No. 1 on Form 10-K/A (this “Amendment”) to Chesapeake Utilities Corporation’s Annual Report on Form 10-K for the fiscal year ended December 31, 2019 (the “Original Filing”), which was originally filed with the Securities and Exchange Commission on February 26, 2020 (the “Original Filing Date”), is being filed for the sole purpose of amending the Exhibits contained in Item 15(a)(3) of Part IV of the Original Filing to include Exhibit 4.12, Description of Securities Registered under Section 12 of the Securities Exchange Act of 1934, as amended, which was not included in the Original Filing, and to amend the descriptions of Exhibits 4.10 and 4.11. Except as described above, no changes have been made to the Original Filing and this Amendment does not modify, amend, or update in any way any of the financial or other information contained in the Original Filing. This Amendment does not reflect events that may have occurred subsequent to the Original Filing Date. Pursuant to Rule 12b-15 of the Securities Exchange Act of 1934, as amended, new certifications pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 are filed as exhibits to this Amendment under Item 15 of Part IV hereof. Because no financial statements have been included in this Amendment and this Amendment does not contain any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4, and 5 of the certifications have been omitted. |
