Subsequent Events (Details) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended		12 Months Ended	66 Months Ended	0 Months Ended	1 Months Ended	7 Months Ended	1 Months Ended
	Jun. 30, 2014 loan	Jun. 30, 2013	Dec. 31, 2013 loan	Jun. 30, 2014	Aug. 05, 2014 Subsequent event	Aug. 12, 2014 Subsequent event loan	Aug. 12, 2014 Subsequent event loan	Aug. 12, 2014 Dividend Reinvestment Plan Subsequent event
Distribution Reinvestment Plan
Shares issued pursuant to DRP (shares)	2,200,000		3,400,000	6,900,000				800,000
Total proceeds from sale of shares pursuant to DRP	$ 20,962		$ 32,649	$ 65,400				$ 7,200
Common stock shares remaining available for sale pursuant to distribution reinvestment plan (shares)								10,600,000
Distributions
Daily cash distribution accrued per share (in dollars per share)	$ 0.002191781				$ 0.002191781
Share Repurchases
Number of shares repurchased (shares)	404,286		593,226			400,000
Total amount of shares repurchased	3,842		5,694			3,800
Repurchase price paid per share (in dollars per share)	$ 9.50					$ 9.63
New Investments
Number (loans)	34		34			3	7
Payments to Acquire Notes Receivable	$ 248,339	$ 413,448				$ 75,000