v3.20.1

Partners' Capital and Distributions (Distributions) (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 14, 2019 | Aug. 14, 2019 | May 15, 2019 | Feb. 14, 2019 | Nov. 14, 2018 | Aug. 14, 2018 | May 15, 2018 | Feb. 14, 2018 | Nov. 14, 2017 | Aug. 14, 2017 | May 15, 2017 | Feb. 14, 2017 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Partners' Capital Notes [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Partners' Capital Account, Distribution Per Unit of Limited Partner Interest (in dollars per share) | $ 1.0200 | $ 1.0125 | $ 1.0050 | $ 0.9975 | $ 0.9775 | $ 0.9575 | $ 0.9375 | $ 0.9200 | $ 0.9050 | $ 0.8900 | $ 0.8725 | $ 0.8550 | $ 4.0350 | $ 3.7925 | $ 3.5225
Limited Partners' Capital Account, Distribution Amount | $ 232,971 | $ 231,258 | $ 229,545 | $ 227,832 | $ 223,061 | $ 218,497 | $ 213,933 | $ 209,940 | $ 206,362 | $ 202,942 | $ 198,951 | $ 194,961 | $ 921,606 | $ 865,431 | $ 803,216

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- Definition The amount of the distribution per unit of limited partner interest. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 + Details
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