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Equity and Capital - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2017
Accumulated Other Comprehensive Income Loss [Roll Forward] |  |  |  |  |
Beginning balance |  |  | $ (927) |  |
Opening adjustment due to change in accounting policy |  |  |  |  | $ 30,903
Other comprehensive (loss) income | $ (2,005) | $ 3,889 | (16,053) | $ 21,161 |
Ending balance | (15,804) |  | (15,804) |  |
Current period other comprehensive income (loss), net | (2,005) | 3,889 | (16,053) | 21,161 |
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] |  |  |  |  |
Accumulated Other Comprehensive Income Loss [Roll Forward] |  |  |  |  |
Beginning balance |  |  | (805) | (6,262) |
Opening adjustment due to change in accounting policy |  |  |  |  | 12
Other comprehensive income (loss) before reclassifications |  |  | (17,448) | 15,731 |
Amounts reclassified from AOCI |  |  | 2,142 | 4,663 |
Other comprehensive (loss) income |  |  | (15,306) | 20,394 |
Ending balance | (16,111) | 14,144 | (16,111) | 14,144 |
Current period other comprehensive income (loss), net |  |  | (15,306) | 20,394 |
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Accounting Standards Update 2017-12 [Member] |  |  |  |  |
Accumulated Other Comprehensive Income Loss [Roll Forward] |  |  |  |  |
Beginning balance |  |  |  | (6,250) |
Accumulated Net Unrealized Investment Gain (Loss) [Member] |  |  |  |  |
Accumulated Other Comprehensive Income Loss [Roll Forward] |  |  |  |  |
Beginning balance |  |  | (122) | (27) |
Other comprehensive income (loss) before reclassifications |  |  | 429 | (51) |
Other comprehensive (loss) income |  |  | 429 | (51) |
Ending balance | 307 | (78) | 307 | (78) |
Current period other comprehensive income (loss), net |  |  | 429 | (51) |
Accumulated Net Unrealized Investment Gain (Loss) [Member] | Accounting Standards Update 2017-12 [Member] |  |  |  |  |
Accumulated Other Comprehensive Income Loss [Roll Forward] |  |  |  |  |
Beginning balance |  |  |  | (27) |
Accumulated Other Comprehensive Income (Loss) [Member] |  |  |  |  |
Accumulated Other Comprehensive Income Loss [Roll Forward] |  |  |  |  |
Beginning balance |  |  | (927) | (6,289) |
Opening adjustment due to change in accounting policy |  |  |  |  | 12
Other comprehensive income (loss) before reclassifications |  |  | (17,019) | 15,680 |
Amounts reclassified from AOCI |  |  | 2,142 | 4,663 |
Other comprehensive (loss) income | (1,718) | 3,749 | (14,877) | 20,343 |
Ending balance | (15,804) | 14,066 | (15,804) | 14,066 |
Current period other comprehensive income (loss), net | (1,718) | 3,749 | (14,877) | 20,343 |
Accumulated Other Comprehensive Income (Loss) [Member] | Accounting Standards Update 2017-12 [Member] |  |  |  |  |
Accumulated Other Comprehensive Income Loss [Roll Forward] |  |  |  |  |
Beginning balance |  |  |  | (6,277) |
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Noncontrolling Interest [Member] |  |  |  |  |
Accumulated Other Comprehensive Income Loss [Roll Forward] |  |  |  |  |
Beginning balance |  |  | 189 | (112) |
Opening adjustment due to change in accounting policy |  |  |  |  | 2
Other comprehensive income (loss) before reclassifications |  |  | (1,119) | 780 |
Amounts reclassified from AOCI |  |  | (57) | 38 |
Other comprehensive (loss) income |  |  | (1,176) | 818 |
Ending balance | (987) | 708 | (987) | 708 |
Current period other comprehensive income (loss), net |  |  | (1,176) | 818 |
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Noncontrolling Interest [Member] | Accounting Standards Update 2017-12 [Member] |  |  |  |  |
Accumulated Other Comprehensive Income Loss [Roll Forward] |  |  |  |  |
Beginning balance |  |  |  | (110) |
AOCI Including Portion Attributable to Noncontrolling Interest [Member] |  |  |  |  |
Accumulated Other Comprehensive Income Loss [Roll Forward] |  |  |  |  |
Beginning balance |  |  | (738) | (6,401) |
Opening adjustment due to change in accounting policy |  |  |  |  | $ 14
Other comprehensive income (loss) before reclassifications |  |  | (18,138) | 16,460 |
Amounts reclassified from AOCI |  |  | 2,085 | 4,701 |
Other comprehensive (loss) income |  |  | (16,053) | 21,161 |
Ending balance | $ (16,791) | $ 14,774 | (16,791) | 14,774 |
Current period other comprehensive income (loss), net |  |  | $ (16,053) | 21,161 |
AOCI Including Portion Attributable to Noncontrolling Interest [Member] | Accounting Standards Update 2017-12 [Member] |  |  |  |  |
Accumulated Other Comprehensive Income Loss [Roll Forward] |  |  |  |  |
Beginning balance |  |  |  | $ (6,387) |

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