Investment Securities, at Fair Value - Narrative (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended		12 Months Ended		0 Months Ended
	Jun. 30, 2014 Security		Dec. 31, 2013 Security		Feb. 07, 2014 Security	Jun. 30, 2013
Schedule of Available-for-sale Securities [Line Items]
Investment securities, at fair value	$ 219,204	[1]	$ 62,067	[1]		$ 78,002
Commercial Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities acquired			10
Investment securities, at fair value	217,313		60,583
Number of securities acquired, fair value below amortized cost	1
Available-for-sale securities amortized cost, accumulated gross unrealized loss, before tax	46
Commercial Mortgage Backed Securities [Member] | Estimate of Fair Value Measurement [Member]
Schedule of Available-for-sale Securities [Line Items]
Investment securities, at fair value	217,300		60,600
Commercial Mortgage Backed Securities [Member] | Cole Merger [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities acquired					15
Commercial Mortgage Backed Securities [Member] | Cole Merger [Member] | Estimate of Fair Value Measurement [Member]
Schedule of Available-for-sale Securities [Line Items]
Investment securities, at fair value					151,200
Commercial Mortgage Backed Securities [Member] | Real Estate Investment Segment [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities acquired	25

[1] For discussion on the restatement adjustments, see Note 2 - Restatement of Previously Issued Financial Statements.