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Comprehensive income | 6 Months Ended
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Jun. 30, 2016
Statement Of Income And Comprehensive Income [Abstract] |
Comprehensive income |
13. | Comprehensive income
|  | For the three months ended |  |  | For the six months ended |
|  | June 30, 2016 |  |  | June 30, 2016 |
|  | Interest |  |  |  |  |  |  | Foreign |  |  | Accumulated |  |  | Interest |  |  |  |  |  |  | Foreign |  |  | Accumulated |
|  | rate swap |  |  |  |  |  |  | currency |  |  | other |  |  | rate swap |  |  |  |  |  |  | currency |  |  | other |
|  | and cap |  |  | Investment |  |  | translation |  |  | comprehensive |  |  | and cap |  |  | Investment |  |  | translation |  |  | comprehensive |
|  | agreements |  |  | securities |  |  | adjustments |  |  | (loss) income |  |  | agreements |  |  | securities |  |  | adjustments |  |  | (loss) income |
Beginning balance |  | $ | (15,929 | ) |  | $ | 1,497 |  |  | $ | (39,081 | ) |  | $ | (53,513 | ) |  | $ | (10,925 | ) |  | $ | 1,361 |  |  | $ | (50,262 | ) |  | $ | (59,826 | )
Unrealized (losses) gains |  |  | (4,283 | ) |  |  | 782 |  |  |  | (4,844 | ) |  |  | (8,345 | ) |  |  | (13,234 | ) |  |  | 1,124 |  |  |  | 6,337 |  |  |  | (5,773 | )
Related income tax benefit (expense) |  |  | 1,667 |  |  |  | (293 | ) |  |  | — |  |  |  | 1,374 |  |  |  | 5,149 |  |  |  | (406 | ) |  |  | — |  |  |  | 4,743 |
|  |  | (2,616 | ) |  |  | 489 |  |  |  | (4,844 | ) |  |  | (6,971 | ) |  |  | (8,085 | ) |  |  | 718 |  |  |  | 6,337 |  |  |  | (1,030 | )
Reclassification from accumulated other comprehensive income into net income |  |  | 733 |  |  |  | — |  |  |  | — |  |  |  | 733 |  |  |  | 1,494 |  |  |  | (152 | ) |  |  | — |  |  |  | 1,342 |
Related income tax (expense) benefit |  |  | (285 | ) |  |  | — |  |  |  | — |  |  |  | (285 | ) |  |  | (581 | ) |  |  | 59 |  |  |  | — |  |  |  | (522 | )
|  |  | 448 |  |  |  | — |  |  |  | — |  |  |  | 448 |  |  |  | 913 |  |  |  | (93 | ) |  |  | — |  |  |  | 820 |
Ending balance |  | $ | (18,097 | ) |  | $ | 1,986 |  |  | $ | (43,925 | ) |  | $ | (60,036 | ) |  | $ | (18,097 | ) |  | $ | 1,986 |  |  | $ | (43,925 | ) |  | $ | (60,036 | )
|  | For the three months ended |  |  | For the six months ended |
|  | June 30, 2015 |  |  | June 30, 2015 |
|  | Interest |  |  |  |  |  |  | Foreign |  |  | Accumulated |  |  | Interest |  |  |  |  |  |  | Foreign |  |  | Accumulated |
|  | rate swap |  |  |  |  |  |  | currency |  |  | other |  |  | rate swap |  |  |  |  |  |  | currency |  |  | other |
|  | and cap |  |  | Investment |  |  | translation |  |  | comprehensive |  |  | and cap |  |  | Investment |  |  | translation |  |  | comprehensive |
|  | agreements |  |  | securities |  |  | adjustments |  |  | income (loss) |  |  | agreements |  |  | securities |  |  | adjustments |  |  | (loss) income |
Beginning balance |  | $ | (6,743 | ) |  | $ | 3,376 |  |  | $ | (44,258 | ) |  | $ | (47,625 | ) |  | $ | (1,795 | ) |  | $ | 3,151 |  |  | $ | (26,373 | ) |  | $ | (25,017 | )
Unrealized (losses) gains |  |  | (4,025 | ) |  |  | (83 | ) |  |  | 5,025 |  |  |  | 917 |  |  |  | (13,476 | ) |  |  | 461 |  |  |  | (12,860 | ) |  |  | (25,875 | )
Related income tax benefit (expense) |  |  | 1,572 |  |  |  | (16 | ) |  |  | — |  |  |  | 1,556 |  |  |  | 5,263 |  |  |  | (178 | ) |  |  | — |  |  |  | 5,085 |
|  |  | (2,453 | ) |  |  | (99 | ) |  |  | 5,025 |  |  |  | 2,473 |  |  |  | (8,213 | ) |  |  | 283 |  |  |  | (12,860 | ) |  |  | (20,790 | )
Reclassification from accumulated other comprehensive income into net income |  |  | 1,294 |  |  |  | (27 | ) |  |  | — |  |  |  | 1,267 |  |  |  | 2,626 |  |  |  | (284 | ) |  |  | — |  |  |  | 2,342 |
Related income tax (expense) benefit |  |  | (505 | ) |  |  | 11 |  |  |  | — |  |  |  | (494 | ) |  |  | (1,025 | ) |  |  | 111 |  |  |  | — |  |  |  | (914 | )
|  |  | 789 |  |  |  | (16 | ) |  |  | — |  |  |  | 773 |  |  |  | 1,601 |  |  |  | (173 | ) |  |  | — |  |  |  | 1,428 |
Ending balance |  | $ | (8,407 | ) |  | $ | 3,261 |  |  | $ | (39,233 | ) |  | $ | (44,379 | ) |  | $ | (8,407 | ) |  | $ | 3,261 |  |  | $ | (39,233 | ) |  | $ | (44,379 | )
The reclassification of net swap and cap realized losses into income are recorded as debt expense in the corresponding consolidated statements of income. See Note 8 to the condensed consolidated financial statements for further details. The reclassification of net investment realized gains into income are recorded in other income in the corresponding consolidated statements of income. See Note 4 to the condensed consolidated financial statements for further details.

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669619-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e640-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e716-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e709-108580 Reference 6: http://www.xbrl.org/2003/role/presentationRef -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 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e681-108580 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Reclassification Adjustments -URI http://asc.fasb.org/extlink&oid=6522872 + Details
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