Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2013

Fair Value Disclosures [Abstract]

Valuation of Financial Instruments that are Marked-To-Market on Recurring Basis

The following table summarizes the valuation of our financial instruments that are marked-to-market on a recurring basis.

	Fair Value Measurements on a Recurring Basis
	December 31, 2013								December 31, 2012
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets
Asset-backed securities	$	—	$	—	$	—	$	—	$	—	$	—	$	532,155	$	532,155
Mortgage-backed securities	—		102,105		—		102,105		—		62,592		—		62,592
Derivative instruments	—		612		—		612		—		31,278		—		31,278
Total	$	—	$	102,717	$	—	$	102,717	$	—	$	93,870	$	532,155	$	626,025

Change in Balance Sheet Carrying Value Associated with Level 3 Financial Instruments Carried at Fair Value on Recurring Basis

The following table summarizes the change in balance sheet carrying value associated with level 3 financial instruments carried at fair value on a recurring basis.

	Asset-Backed Securities
	Years Ended December 31,
	2013			2012		2011
Balance, beginning of period	$	532,155		$	498,657	$	556,963
Total gains/(losses) (realized and unrealized):
Included in earnings	(21,490		)	23,149		(69,595		)
Included in other comprehensive income	63,813			—		—
Included in earnings - accretion of discount	7,596			10,349		11,289
Proceeds from sale	(582,074		)	—		—
Transfers in and/or out of level 3	—			—		—
Balance, end of period	$	—		$	532,155	$	498,657
Change in unrealized gains/(losses) relating to instruments still held at the reporting date	$	—		$	23,149	$	(69,595	)

Fair Values of Financial Assets and Liabilities, Including Derivative Financial Instruments

The following table summarizes the fair values of our financial assets and liabilities, including derivative financial instruments.

	December 31, 2013							December 31, 2012
	Fair Value		Carrying Value		Difference			Fair Value		Carrying Value		Difference
Earning assets
Loans held for investment, net	$	8,541,919	$	7,931,377	$	610,542		$	7,369,727	$	6,487,454	$	882,273
Cash and cash equivalents	2,182,865		2,182,865		—			1,599,082		1,599,082		—
Available for sale investments	102,105		102,105		—			594,747		594,747		—
Accrued interest receivable	356,283		356,283		—			234,797		234,797		—
Derivative instruments	612		612		—			31,278		31,278		—
Total earning assets	$	11,183,784	$	10,573,242	$	610,542		$	9,829,631	$	8,947,358	$	882,273
Interest-bearing liabilities
Money-market, savings and NOW accounts	$	4,029,881	$	4,029,881	$	—		$	3,030,729	$	3,030,729	$	—
Certificates of deposit	4,984,114		4,971,669		(12,445		)	4,485,208		4,466,604		(18,604		)
Accrued interest payable	13,119		13,119		—			12,880		12,880		—
Total interest-bearing liabilities	$	9,027,114	$	9,014,669	(12,445		)	$	7,528,817	$	7,510,213	$	(18,604	)
Excess of net asset fair value over carrying value					$	598,097						$	863,669