Stockholders' Equity - Additional Information (Details) $ / shares in Units, $ in Thousands			3 Months Ended						9 Months Ended	12 Months Ended
	Apr. 11, 2022 $ / shares	Jun. 01, 2009	Sep. 30, 2022 USD ($) $ / shares shares	Jun. 30, 2022 USD ($) shares	Mar. 31, 2022 USD ($) $ / shares shares	Sep. 30, 2021 USD ($) shares	Jun. 30, 2021 USD ($) shares	Mar. 31, 2021 USD ($) shares	Sep. 30, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Jul. 31, 2020 shares	Aug. 10, 2018 shares
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Common stock, shares outstanding (in shares)			0						0	0
Repurchase of stock | $						$ 4,095
Shareholder Rights Plan
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Rights plan, amended term of agreement		3 years
Stock repurchase program expiration date	Jun. 04, 2025
Preferred Stock
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Repurchase of stock | $			$ 1,640	$ 1,749
Common Equity Distribution Agreements | Common Stock
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Issuance of stock (in shares)			0						0	0
Maximum
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Stock repurchase program, number of shares authorized to be repurchased											18,000,000
Maximum | Shareholder Rights Plan
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Rights plan price per share | $ / shares					$ 70.00
Minimum | Shareholder Rights Plan
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Rights plan price per share | $ / shares	$ 21.30
Common Class A
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Common stock, shares authorized (in shares)			450,000,000						450,000,000	450,000,000
Common stock, par value (in dollars per share) | $ / shares			$ 0.01						$ 0.01	$ 0.01
Common Stock Voting Rights Per Share Owned			1						1
Common stock, shares outstanding (in shares)			28,628,959						28,628,959	30,676,931
Stock repurchase program shares previously available to be repurchased			10,560,785						10,560,785
Repurchase of stock | $			$ 1,493	$ 3,242	$ 3,497		$ 3,490	$ 523	$ 8,232	$ 12,475
Common Class A | Common Stock
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Repurchase of stock (in shares)			472,357	947,570	1,009,566	1,059,980	855,835	137,655	2,429,493	3,242,371
Repurchase of stock | $			$ 5	$ 10	$ 10	$ 11	$ 9	$ 1
Common Class A | Amended New Equity Distribution Agreements | Common Stock
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Number of shares offer and sell			11,302,160						11,302,160
Common Class A | Maximum | Amended New Equity Distribution Agreements | Common Stock
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Number of shares offer and sell												12,597,423
Common Class A | Minimum | Shareholder Rights Plan
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Percentage of beneficial ownership of common stock		4.90%
Common Class B
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Common stock, shares authorized (in shares)			100,000,000						100,000,000
Common stock, par value (in dollars per share) | $ / shares			$ 0.01						$ 0.01
Common Stock Voting Rights Per Share Owned			3						3
7.00% Series B Cumulative Perpetual Redeemable Preferred Stock
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Preferred stock, shares authorized (in shares)			2,000,000						2,000,000
Preferred stock, par value (in dollars per share) | $ / shares			$ 0.01						$ 0.01
Series C Preferred Stock
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Preferred stock, shares authorized (in shares)			2,500,000						2,500,000
Preferred stock, par value (in dollars per share) | $ / shares			$ 0.01						$ 0.01	$ 0.01
Preferred stock, dividend rate percentage									8.25%
Preferred stock voting rights per share owned			0						0
Preferred stock, liquidation preference per share | $ / shares			$ 25.00						$ 25.00
Preferred stock, redeemable price per share | $ / shares			25.00						$ 25.00
Preferred stock, dividend payment terms									Dividends are payable quarterly in arrears on the 30th day of March, June, September and December of each year, when and as declared.
Preferred stock, annual dividend rate per share | $ / shares			$ 2.0625						$ 2.0625
Preferred stock, rate conversion date									Mar. 30, 2024
Series C Preferred Stock | LIBOR
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Preferred stock, variable dividend spread rate									5.664%
Series C Preferred Stock | Preferred Stock
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Repurchase of stock (in shares)			79,848	72,363					152,211	0
Repurchase of stock | $			$ 1,640	$ 1,749					$ 3,389
Undesignated Preferred Stock
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Preferred stock, shares authorized (in shares)			20,400,000						20,400,000
Series A Preferred Stock
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Preferred stock, shares authorized (in shares)			100,000						100,000
Preferred stock shares unissued			100,000						100,000
Series B Preferred Stock
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Preferred stock, par value (in dollars per share) | $ / shares			$ 0.01						$ 0.01	$ 0.01
Preferred stock, dividend rate percentage									7.00%
Preferred stock voting rights per share owned			0						0
Preferred stock, liquidation preference per share | $ / shares			$ 25.00						$ 25.00
Preferred stock, redeemable price per share | $ / shares			25.00						$ 25.00
Preferred stock, dividend payment terms									Dividends are payable quarterly in arrears on the 30th day of March, June, September and December of each year, when and as declared.
Preferred stock, annual dividend rate per share | $ / shares			$ 1.75						$ 1.75
Series B Preferred Stock | Preferred Stock
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Issuance of stock (in shares)					6,058	22,719
Series B Preferred Stock | Series B Preferred Equity Distribution Agreement | Preferred Stock
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Issuance of stock (in shares)									6,058	37,337
Number of Shares Offer and Sell			1,602,566						1,602,566
Weighted average public offering price | $ / shares									$ 24.87	$ 24.99
Proceeds net of selling commissions and expenses | $									$ 149	$ 919
Series B Preferred Stock | Maximum | Series B Preferred Equity Distribution Agreement | Preferred Stock
Share based Compensation Arrangement by Share based Payment Award [Line Items]
Number of Shares Offer and Sell			1,647,370						1,647,370