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Comprehensive income (Tables) | 9 Months Ended
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Sep. 30, 2018
Statement of Comprehensive Income [Abstract] |
Comprehensive income |
| For the three months ended September 30, 2018 |  | For the nine months ended September 30, 2018
| Interest rate cap agreements |  | Investment securities |  | Foreign currency translation adjustments |  | Accumulated other comprehensive (loss) income |  | Interest rate cap agreements |  | Investment securities |  | Foreign currency translation adjustments |  | Accumulated other comprehensive (loss) income
Beginning balance | $ | (11,258 | ) |  |  |  | $ | (10,667 | ) |  | $ | (21,925 | ) |  | $ | (12,408 | ) |  | $ | 5,662 |  |  | $ | 19,981 |  |  | $ | 13,235 |
Cumulative effect of change in accounting principle(1) | — |  |  |  |  | — |  |  | — |  |  | (2,706 | ) |  | (5,662 | ) |  | — |  |  | (8,368 | )
Unrealized gains (losses) | 50 |  |  |  |  | (8,827 | ) |  | (8,777 | ) |  | 1,103 |  |  | — |  |  | (39,475 | ) |  | (38,372 | )
Related income tax expense | (13 | ) |  |  |  | — |  |  | (13 | ) |  | (284 | ) |  | — |  |  | — |  |  | (284 | )
| 37 |  |  |  |  | (8,827 | ) |  | (8,790 | ) |  | 819 |  |  | — |  |  | (39,475 | ) |  | (38,656 | )
Reclassification from accumulated other comprehensive income into net income | 2,163 |  |  |  |  | — |  |  | 2,163 |  |  | 6,303 |  |  | — |  |  | — |  |  | 6,303 |
Related income tax expense | (557 | ) |  |  |  | — |  |  | (557 | ) |  | (1,623 | ) |  | — |  |  | — |  |  | (1,623 | )
| 1,606 |  |  |  |  | — |  |  | 1,606 |  |  | 4,680 |  |  | — |  |  | — |  |  | 4,680 |
Ending balance | $ | (9,615 | ) |  |  |  | $ | (19,494 | ) |  | $ | (29,109 | ) |  | $ | (9,615 | ) |  | $ | — |  |  | $ | (19,494 | ) |  | $ | (29,109 | )
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(1) | Reflects the cumulative effect of a change in accounting principle for ASUs 2016-01 and 2018-03 on classification and measurement of financial instruments and ASU 2018-02 on remeasurement and reclassification of deferred tax effects in accumulated other comprehensive income associated with the 2017 Tax Act.
| For the three months ended September 30, 2017 |  | For the nine months ended September 30, 2017
| Interest rate cap agreements |  | Investment securities |  | Foreign currency translation adjustments |  | Accumulated other comprehensive (loss) income |  | Interest rate cap and swap agreements |  | Investment securities |  | Foreign currency translation adjustments |  | Accumulated other comprehensive (loss) income
Beginning balance | $ | (14,502 | ) |  | $ | 4,580 |  |  | $ | (17,386 | ) |  | $ | (27,308 | ) |  | $ | (12,029 | ) |  | $ | 2,175 |  |  | $ | (79,789 | ) |  | $ | (89,643 | )
Unrealized (losses) gains | (782 | ) |  | 1,253 |  |  | 29,143 |  |  | 29,614 |  |  | (8,967 | ) |  | 4,682 |  |  | 91,546 |  |  | 87,261 |
Related income tax benefit (expense) | 304 |  |  | (390 | ) |  | — |  |  | (86 | ) |  | 3,488 |  |  | (1,202 | ) |  | — |  |  | 2,286 |
| (478 | ) |  | 863 |  |  | 29,143 |  |  | 29,528 |  |  | (5,479 | ) |  | 3,480 |  |  | 91,546 |  |  | 89,547 |
Reclassification from accumulated other comprehensive income into net income | 2,070 |  |  | (15 | ) |  | — |  |  | 2,055 |  |  | 6,208 |  |  | (362 | ) |  | — |  |  | 5,846 |
Related income tax (expense) benefit | (805 | ) |  | 6 |  |  | — |  |  | (799 | ) |  | (2,415 | ) |  | 141 |  |  | — |  |  | (2,274 | )
| 1,265 |  |  | (9 | ) |  | — |  |  | 1,256 |  |  | 3,793 |  |  | (221 | ) |  | — |  |  | 3,572 |
Ending balance | $ | (13,715 | ) |  | $ | 5,434 |  |  | $ | 11,757 |  |  | $ | 3,476 |  |  | $ | (13,715 | ) |  | $ | 5,434 |  |  | $ | 11,757 |  |  | $ | 3,476 |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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- References No definition available. + Details
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