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Net Income Per Unit (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Net Income Per Unit [Line Items] |  |  |  |
Net income attributable to partners | $ 46,328 | $ 30,530 | $ 118,539 | $ 75,112
Less: Partners' distribution | 39,307 | 21,487 | 87,536 | 62,256
Allocation of earnings in excess (deficit) of distributions | $ 7,021 | $ 151 | $ 12,385 | $ (11,619)
Common Units Excluded From Computation Of Earnings Per Unit, Units | 0 | 0 | 0 | 0
Footnote [Abstract] |  |  |  |
Common Units Excluded From Computation Of Earnings Per Unit, Units | 0 | 0 | 0 | 0
Common Units |  |  |  |
Net Income Per Unit [Line Items] |  |  |  |
Common units - (basic) (in shares) | 36,889,761 | 24,417,285 | 30,290,051 | 24,411,308
Common units - (diluted) (in shares) | 36,894,043 | 24,420,582 | 30,292,261 | 24,417,466
Common units - (basic) (in dollars per share) | $ 1.26 | $ 0.89 | $ 3.30 | $ 2.08
Common units - (diluted) (in dollars per share) | $ 1.26 | $ 0.89 | $ 3.30 | $ 2.08
General Partner |  |  |  |
Net Income Per Unit [Line Items] |  |  |  |
Net income attributable to partners |  | $ 8,895 | $ 18,725 | $ 24,244
Less: General partner's distribution (including IDRs) | $ 0 | 8,892 | 18,618 | 24,475
Allocation of earnings in excess (deficit) of distributions | 0 | 3 | 106 | (231)
Total partner's earnings | 0 | 8,895 | 18,724 | 24,244
Common unitholders |  |  |  |
Net Income Per Unit [Line Items] |  |  |  |
Less: Partners' distribution |  |  | 87,536 | 62,256
Allocation of earnings in excess (deficit) of distributions |  |  | $ 12,279 | $ (11,388)
Common units - (basic) (in shares) |  |  | 30,290,051 | 24,411,308
Common units - (diluted) (in shares) |  |  | 30,292,261 | 24,417,466
Common units - (basic) (in dollars per share) |  |  | $ 3.30 | $ 2.08
Common units - (diluted) (in dollars per share) |  |  | $ 3.30 | $ 2.08
Common unitholders | Common Units |  |  |  |
Net Income Per Unit [Line Items] |  |  |  |
Less: Partners' distribution | 39,307 | 21,487 |  |
Allocation of earnings in excess (deficit) of distributions | 7,021 | 148 |  |
Total partner's earnings | $ 46,328 | $ 21,635 | $ 99,815 | $ 50,868
Common units - (basic) (in shares) | 36,889,761 | 24,417,285 |  |
Common units - (diluted) (in shares) | 36,894,043 | 24,420,582 |  |
Common units - (basic) (in dollars per share) | $ 1.26 | $ 0.89 |  |
Common units - (diluted) (in dollars per share) | 1.26 | $ 0.89 |  |
Maximum |  |  |  |
Footnote [Abstract] |  |  |  |
Distribution Payment Targets | $ 0.43125 |  |  |
General Partnership |  |  |  |
Footnote [Abstract] |  |  |  |
General partner's ownership interest (as percent) | 0.00% | 2.00% | 2.00% | 2.00%

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