Comprehensive income (Tables)

9 Months Ended

Sep. 30, 2017

Statement of Comprehensive Income [Abstract]

Comprehensive income

	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 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

	For the three months ended September 30, 2016												For the nine months ended September 30, 2016
	Interest rate cap and swap 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	$	(18,097	)	$	1,986		$	(43,925	)	$	(60,036	)	$	(10,925	)	$	1,361		$	(50,262	)	$	(59,826	)
Unrealized (losses) gains	(255		)	1,454			(951		)	248			(13,489		)	2,578			5,386			(5,525		)
Related income tax benefit (expense)	102			(391		)	—			(289		)	5,251			(797		)	—			4,454
	(153		)	1,063			(951		)	(41		)	(8,238		)	1,781			5,386			(1,071		)
Reclassification from accumulated other comprehensive income into net income	634			(81		)	7,513			8,066			2,128			(233		)	7,513			9,408
Related income tax (expense) benefit	(246		)	31			—			(215		)	(827		)	90			—			(737		)
	388			(50		)	7,513			7,851			1,301			(143		)	7,513			8,671
Ending balance	$	(17,862	)	$	2,999		$	(37,363	)	$	(52,226	)	$	(17,862	)	$	2,999		$	(37,363	)	$	(52,226	)