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Debt Obligations (Details 3)	6 Months Ended	12 Months Ended
	Jun. 30, 2015 USD ($) item	Dec. 31, 2014 USD ($) item	Dec. 31, 2010 USD ($)
Debt Obligations
Debt, Carrying Value	$ 79,262,601	$ 331,395,126
Collateral Cash, Restricted Cash	$ 76,252,399	218,100,529
Collateralized debt obligations
Debt Obligations
Debt, Face Value		312,071,055	$ 42,800,000
Debt, Carrying Value		331,395,126
Collateral Loans, Unpaid Principal		618,184,291
Collateral Loans, Carrying Value		489,742,125
Collateral Cash, Restricted Cash		139,416,831
Collateral-At-Risk		$ 433,880,132
Weighted average note rate (as a percent)	1.42%	3.13%
Weighted average note rate excluding the swap effect (as a percent)	1.00%	1.07%
Weighted average note rate including certain fees and costs (as a percent)	1.93%	3.55%
CDO I debt
Debt Obligations
Debt, Face Value		$ 69,972,159
Debt, Carrying Value		75,402,789
Collateral Loans, Unpaid Principal		222,903,486
Collateral Loans, Carrying Value		174,460,160
Collateral Cash, Restricted Cash		5,232,226
Collateral-At-Risk		$ 180,691,292
Number of investment grade tranches issued | item		4
Variable interest rate, description		three-month LIBOR
Weighted average note rate (as a percent)		3.23%
CDO II debt
Debt Obligations
Debt, Face Value		$ 97,906,092
Debt, Carrying Value		103,484,624
Collateral Loans, Unpaid Principal		192,522,685
Collateral Loans, Carrying Value		143,824,571
Collateral Cash, Restricted Cash		69,412,808
Collateral-At-Risk		$ 106,139,494
Number of investment grade tranches issued | item		9
Variable interest rate, description		three-month LIBOR
Weighted average note rate (as a percent)		6.22%
CDO III debt
Debt Obligations
Debt, Face Value	$ 71,099,881	$ 144,192,804
Debt, Carrying Value	79,262,601	152,507,713
Collateral Loans, Unpaid Principal	172,349,012	202,758,120
Collateral Loans, Carrying Value	141,601,623	171,457,394
Collateral Cash, Restricted Cash	22,087,981	64,771,797
Collateral-At-Risk	$ 127,683,921	$ 147,049,346
Number of investment grade tranches issued | item	10
Variable interest rate, description	three-month LIBOR
Weighted average note rate (as a percent)	1.42%	0.98%
Revolving note class
Debt Obligations
Revolving note amount		$ 100,000,000

X

- Definition

Represents the face value of collateral in default, as defined by the CDO indenture, as well as assets deemed to be a credit risk. Credit risk assets are reported by each of the CDOs and are generally defined as the one that, in the CDO collateral manager's reasonable business judgment, has a significant risk of declining in credit quality or, with a passage of time, becoming a defaulted asset.

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Reflects the calculation, as of the balance sheet date, of the average interest rate excluding the effect of swap weighted by the amount of debt outstanding by type or by instrument at that time.

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Represents the carrying value of the mortgage loans that serve as collateral.

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Represents the unpaid principal balance of the mortgage loans that serve as collateral.

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The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

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Face (par) amount of debt instrument at time of issuance.

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Weighted average interest rate of debt outstanding.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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