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Commitments and Contingencies (Details Textuals)	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($) $ / shares shares	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) loan $ / shares shares	Jun. 30, 2019 USD ($)	Apr. 06, 2020 $ / shares shares	Dec. 31, 2019 shares
Mortgage Loans on Real Estate
Aggregate unpaid principal balance of mortgage loans on real estate		$ 200,100,000	$ 26,200,000	$ 200,100,000
Proceeds from issuance of preferred stock and warrants, net of offering costs	$ 130,000,000.0		$ 124,977,000	$ 0
Preferred Stock, Shares Issued | shares	0		0			0
Preferred Stock, Liquidation Preference Per Share | $ / shares	$ 25.00		$ 25.00		$ 25.00
Class of Warrant or Right, Outstanding | shares					6,500,000
Investment warrants, exercise price (in dollars per share) | $ / shares					$ 10.00
Other Commitment	$ 11,102,000		$ 11,102,000
Loss Contingency Accrual	0		0
Put Option [Member]
Mortgage Loans on Real Estate
Other Commitment	50,700,000		50,700,000
Put Option [Member] | Warrant [Member]
Mortgage Loans on Real Estate
Other Commitment	$ 11,100,000		$ 11,100,000
Re-performing loans | Purchase commitment | One-to-four family residences
Mortgage Loans on Real Estate
Number of mortgage loans on real estate | loan			281
Aggregate unpaid principal balance of mortgage loans on real estate			$ 60,000,000.0

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- Definition

Represents the number of performing mortgage loans.

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Exercise price per share or per unit of warrants or rights outstanding.

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The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.

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