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	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2014 Other Assets [Member]	Sep. 30, 2013 Other Assets [Member]	Sep. 30, 2013 Loans Held-for-Sale, Net [Member]	Sep. 30, 2013 Investment in CT Legacy Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning			$ 54,461			$ 132,000
Consolidation of CT Legacy Partners				166,094		(132,000)
Transfer from loans receivable, at fair value					2,000
Proceeds from investments			(19,781)	(85,547)	(3,200)
Deferred interest				325
Adjustments to fair value included in earnings
Gain on investments at fair value			7,616	4,463
Valuation allowance on loans held-for-sale	600	(1,200)			1,200
Balance, ending			$ 42,296	$ 85,335