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Other comprehensive (loss) income (Tables) | 12 Months Ended
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Dec. 31, 2015
Statement Of Income And Comprehensive Income [Abstract] |
Changes in Accumulated Other Comprehensive (Loss) Income | Charges and credits to other comprehensive (loss) income have been as follows:
|  | Interest rate swap and cap agreements |  |  | Investment securities |  |  | Foreign currency translation adjustments |  |  | Accumulated other comprehensive income (loss) |
Balance at December 31, 2012 |  | $ | (15,402 | ) |  | $ | 1,310 |  |  | $ | (1,205 | ) |  | $ | (15,297 | )
Unrealized (losses) gains |  |  | 277 |  |  |  | 3,752 |  |  |  | (2,216 | ) |  |  | 1,813 |
Related income tax |  |  | (108 | ) |  |  | (1,452 | ) |  |  | — |  |  |  | (1,560 | )
|  |  | 169 |  |  |  | 2,300 |  |  |  | (2,216 | ) |  |  | 253 |
Reclassification from accumulated other comprehensive losses (income) into net income |  |  | 21,096 |  |  |  | (802 | ) |  |  | — |  |  |  | 20,294 |
Related income tax |  |  | (8,207 | ) |  |  | 312 |  |  |  | — |  |  |  | (7,895 | )
|  |  | 12,889 |  |  |  | (490 | ) |  |  | — |  |  |  | 12,399 |
Balance at December 31, 2013 |  | $ | (2,344 | ) |  | $ | 3,120 |  |  | $ | (3,421 | ) |  | $ | (2,645 | )
Unrealized (losses) gains |  |  | (16,509 | ) |  |  | 425 |  |  |  | (22,952 | ) |  |  | (39,036 | )
Related income tax |  |  | 6,450 |  |  |  | (187 | ) |  |  | — |  |  |  | 6,263 |
|  |  | (10,059 | ) |  |  | 238 |  |  |  | (22,952 | ) |  |  | (32,773 | )
Reclassification from accumulated other comprehensive losses (income) into net income |  |  | 17,409 |  |  |  | (340 | ) |  |  | — |  |  |  | 17,069 |
Related income tax |  |  | (6,801 | ) |  |  | 133 |  |  |  | — |  |  |  | (6,668 | )
|  |  | 10,608 |  |  |  | (207 | ) |  |  | — |  |  |  | 10,401 |
Balance at December 31, 2014 |  | $ | (1,795 | ) |  | $ | 3,151 |  |  | $ | (26,373 | ) |  | $ | (25,017 | )
Unrealized losses |  |  | (20,085 | ) |  |  | (1,974 | ) |  |  | (23,889 | ) |  |  | (45,948 | )
Related income tax |  |  | 7,844 |  |  |  | 561 |  |  |  | — |  |  |  | 8,405 |
|  |  | (12,241 | ) |  |  | (1,413 | ) |  |  | (23,889 | ) |  |  | (37,543 | )
Reclassification from accumulated other comprehensive losses (income) into net income |  |  | 5,103 |  |  |  | (618 | ) |  |  | — |  |  |  | 4,485 |
Related income tax |  |  | (1,992 | ) |  |  | 241 |  |  |  | — |  |  |  | (1,751 | )
|  |  | 3,111 |  |  |  | (377 | ) |  |  | — |  |  |  | 2,734 |
Balance at December 31, 2015 |  | $ | (10,925 | ) |  | $ | 1,361 |  |  | $ | (50,262 | ) |  | $ | (59,826 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 + Details
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- References No definition available. + Details
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