Fair Values - Reconciliation of Beginning and Ending Balances of Assets Measured at Fair Value on Recurring Basis Using Level 3 Inputs (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Adjustments to fair value included in earnings
Valuation allowance on loans held-for-sale	$ 0	$ (2,000)	$ 0	$ (1,800)
Other Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning			54,461	0
Consolidation of CT Legacy Partners				166,094
Proceeds from investments			(326)	(37,279)
Deferred interest				195
Adjustments to fair value included in earnings
Gain on investments at fair value			5,829	4,000
Balance, ending	59,964	133,010	59,964	133,010
Loans Held-for-Sale, Net [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning				0
Transfer from loans receivable, at fair value				2,000
Adjustments to fair value included in earnings
Valuation allowance on loans held-for-sale				1,800
Balance, ending		3,800		3,800
Investment in CT Legacy Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning				132,000
Consolidation of CT Legacy Partners				(132,000)
Adjustments to fair value included in earnings
Balance, ending		$ 0		$ 0