Other comprehensive income (loss) (Tables)

12 Months Ended

Dec. 31, 2012

Charges and Credits to Other Comprehensive Income

Charges and credits to other comprehensive income (loss) have been as follows:

	2010
	Before tax amount			Tax (expense) benefit			Net-of-tax amount
Unrealized losses on interest rate swaps	$	(217	)	$	83		$	(134	)
Less reclassification of net swap realized losses into net income		9,093			(3,536	)		5,557
Net swap activity		8,876			(3,453	)		5,423
Unrealized gains on investments		1,007			(392	)		615
Less reclassification of net investment realized losses into net income		22			(9	)		13
Net investment activity		1,029			(401	)		628
Total	$	9,905		$	(3,854	)	$	6,051

	2011
	Before tax amount			Tax (expense) benefit			Net-of-tax amount
Unrealized losses on interest rate swap and cap agreements	$	(47,544	)	$	18,495		$	(29,049	)
Less reclassification of net swap and cap agreements realized losses into net income		15,911			(6,190	)		9,721
Net swap and cap agreements activity		(31,633	)		12,305			(19,328	)
Unrealized losses on investments		(986	)		384			(602	)
Less reclassification of net investment realized gains into net income		(93	)		36			(57	)
Net investment activity		(1,079	)		420			(659	)
Total	$	(32,712	)	$	12,725		$	(19,987	)

	2012
	Before tax amount			Tax (expense) benefit			Net-of-tax amount
Unrealized losses on interest rate swap and cap agreements	$	(10,154	)	$	3,950		$	(6,204	)
Less reclassification of net swap and cap agreements realized losses into net income		16,578			(6,448	)		10,130
Net swap and cap agreements activity		6,424			(2,498	)		3,926
Unrealized losses on investments		2,524			(983	)		1,541
Less reclassification of net investment realized gains into net income		(123	)		48			(75	)
Net investment activity		2,401			(935	)		1,466
Foreign currency translation adjustments		(1,205	)		—			(1,205	)
Total	$	7,620		$	(3,433	)	$	4,187

Changes in Accumulated Other Comprehensive Income (Loss)

Changes in accumulated other comprehensive income (loss) has been as follows:

	Interest rate swap and cap agreements			Investment securities			Foreign currency translation adjustments			Accumulated other comprehensive income (loss)
Balance December 31, 2010	$	—		$	503		$	—		$	503
Net activity		(19,328	)		(659	)		—			(19,987	)
Balance December 31, 2011	$	(19,328	)	$	(156	)	$	—		$	(19,484	)
Net activity		3,926			1,466			(1,205	)		4,187
Balance December 31, 2012	$	(15,402	)	$	1,310		$	(1,205	)	$	(15,297	)