Income Taxes - Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Gross deferred income tax assets:
NOL carryforwards	$ 272,713	$ 297,900
Basis difference – real estate properties	99,984	59,259
Basis difference – equity investments	8,462	0
Section 163(j) interest limitation	1,599	1,486
Capital loss carryforward	14,238	16,845
Other – temporary differences	10,027	4,122
Total gross deferred income tax assets	407,023	379,612
Valuation allowance	(337,587)	(326,706)
Gross deferred income tax assets, net of valuation allowance	69,436	52,906
Gross deferred income tax liabilities:
Basis difference – real estate properties	104,292	79,230
Basis difference – equity investments	30,276	31,995
Other – temporary differences	949	999
Total gross deferred income tax liabilities	135,517	112,224
Net deferred income tax liabilities	$ 66,081	$ 59,318