Tax Characterization of Dividends per Share on Common Shares (Detail) - $ / shares		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Dividends Payable [Line Items]
Total Per Share		$ 0	$ 0	$ 0.44
Dividend Payment 1st
Dividends Payable [Line Items]
Declaration Date				Feb. 20, 2020
Record Date				Apr. 01, 2020
Payable Date				Apr. 15, 2020
Ordinary Income	[1]			$ 0.440000
Total Per Share				$ 0.44

[1] (1) $0.040745 of this amount constitutes a "Qualified Dividend", as defined by the IRS.