Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended			12 Months Ended
	Jun. 30, 2020	May 09, 2020	Jun. 30, 2021	May 31, 2021	Feb. 28, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jun. 16, 2021
Class of Stock [Line Items]
Issuance and redemption costs of redeemed preferred stock						$ 4,682	$ 0	$ 0
Common stock dividend percentage of cash limit		10.00%
Common stock dividends		$ 8,200				$ 105,992	$ 37,202	$ 252,071
Common stock dividends (in shares)	16,338,511
Payments of ordinary dividends, common stock	$ 8,200
Common stock dividends shares calculation base (in USD per share)	$ 4.5435
Restricted Stock
Class of Stock [Line Items]
Shares granted during the year (in shares)				127,115
Series A Cumulative Redeemable Preferred Stock
Class of Stock [Line Items]
Preferred stock, redemption amount									$ 140,000
Preferred stock, liquidation preference (in USD per share)									$ 25.00
Preferred stock dividend rate						7.75%
Preferred stock, price per share per annum						$ 1.9375
Series B Cumulative Redeemable Preferred Stock
Class of Stock [Line Items]
Preferred stock dividend rate						7.75%
Preferred stock, price per share per annum						$ 1.9375
Preferred stock redemption price (in USD per share)						$ 25.00
Series B Cumulative Redeemable Preferred Stock | LIBOR
Class of Stock [Line Items]
Preferred stock dividends basis spread on variable rate						5.18%
Series C Cumulative Redeemable Preferred Stock
Class of Stock [Line Items]
Preferred stock, liquidation preference (in USD per share)						$ 25.00
Preferred stock dividend rate						7.50%
Preferred stock, price per share per annum						$ 1.875
Series C Cumulative Redeemable Preferred Stock | LIBOR
Class of Stock [Line Items]
Preferred stock dividends basis spread on variable rate						5.289%
Preferred Stock
Class of Stock [Line Items]
Preferred stock redemption price (in USD per share)						$ 25.00
Equity distribution agreement, number of shares to sell						5,500,000
Common Stock
Class of Stock [Line Items]
Number of shares sold in transaction (in shares)			43,125,000		27,600,000
Sale of stock, price (in USD per share)			$ 3.39		$ 3.75
Proceeds from issuance of common stock			$ 145,900		$ 103,100
Number of shares authorized to be repurchased (in shares)						18,163,982
Common Stock | Equity Distribution Agreement
Class of Stock [Line Items]
Equity distribution agreement, number of shares to sell						56,865,980
Number of shares sold in transaction (in shares)						55,744,020	21,849,740
Proceeds from issuance of common stock						$ 180,500	$ 73,700
Payments of stock issuance costs						$ 2,600	$ 1,200