Investment Securities, at Fair Value - Narrative (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2014 security	Dec. 31, 2013 security
Schedule of Available-for-sale Securities [Line Items]
Investment securities, at fair value	$ 219,204	$ 62,067
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] | Real Estate Investment Segment [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities acquired	25
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
Cole Merger [Member] | Commercial Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities acquired	15
Cole Merger [Member] | Commercial Mortgage Backed Securities [Member] | Estimate of Fair Value Measurement [Member]
Schedule of Available-for-sale Securities [Line Items]
Investment securities, at fair value	$ 151,200