Stockholders’ Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended			12 Months Ended
	Aug. 31, 2018	Apr. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Oct. 31, 2018	May 31, 2018	Oct. 31, 2017
Class of Stock [Line Items]
Shares authorized for repurchase						3,000,000
Shares repurchased				1,500,000
Repurchase of common stock				$ 34,118	$ 40,869
Shares remained available for repurchase				$ 1,000
Preferred shares, par value				$ 0.0001	$ 0.0001
Common Stock A [Member] | At-the-Market (ATM) Offering Program [Member]
Class of Stock [Line Items]
Authorized number of shares for issuance in offering program								2,000,000
Issuance of common stock					100,000
Proceeds from issuance of stock, gross					$ 2,800
Payments of sales commissions					$ 100
Remaining number of shares for issuance in offering program				1,000,000
Series A Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Stock [Member]
Class of Stock [Line Items]
Preferred shares issued		170,900	1,600,000
Preferred shares dividend rate			8.50%	8.50%	8.50%
Preferred shares, par value			$ 0.0001
Preferred shares, liquidation preference			25.00
Preferred shares, redemption price			$ 25.00
Net proceeds from issuance of preferred shares		$ 4,100	$ 38,300		$ 10,500
Payments of underwriting discount		$ 100
Authorized number of shares for issuance in offering program							2,200,000
Issuance of common stock					428,710
Payments of sales commissions					$ 200
Remaining number of shares for issuance in offering program				1,800,000
Series B Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Stock [Member]
Class of Stock [Line Items]
Preferred shares issued	1,700,000
Preferred shares dividend rate	8.50%			8.50%	8.50%
Preferred shares, par value	$ 0.0001
Preferred shares, liquidation preference	25.00
Preferred shares, redemption price	$ 25.00
Net proceeds from issuance of preferred shares	$ 41,200
Preferred shares issued, additional offering	255,000
Net proceeds from issuance of preferred shares, additional offering	$ 6,200
Payments of underwriting discount	$ 200