Income Taxes - Deferred Income Taxes Related to Temporary Differences between Tax Bases of Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deferred tax liabilities:
Accelerated depreciation	$ 285,835	$ 273,503
Prepaid costs currently deductible	13,572	12,567
Other	10,144	6,767
Total deferred tax liabilities	309,551	292,837
Deferred tax assets:
Accrued costs not yet deductible	15,909	13,742
Allowance for doubtful accounts	733	713
Net operating loss carry-forward	7,415	28,670
Deferred revenues	2,175	5,439
Share-based compensation	3,190	2,718
Total deferred tax assets	29,422	51,282
Deferred income taxes, net	$ 280,129	$ 241,555