Earnings Per Share (Computation of Basic and Diluted Earnings per Common Share) (Detail) - USD ($) $ / shares in Units, $ in Thousands	5 Months Ended	7 Months Ended	12 Months Ended
	Jun. 03, 2018	Dec. 31, 2018	Dec. 31, 2019
Numerator:
Undistributed net income from operations	$ 696,156	$ 61,425	$ 61,257
Basic net income attributable to common shares	$ 696,156	$ 61,425	$ 61,257
Denominator:
Basic weighted average shares outstanding (in shares)	29,338,329	20,028,227	20,130,835
Basic undistributed net income per share attributable to common shares (usd per share)	$ 23.73	$ 3.07	$ 3.04
Numerator:
Undistributed net income from operations	$ 696,156	$ 61,425	$ 61,257
Diluted net income attributable to common shares	$ 696,156	$ 61,425	$ 61,257
Denominator:
Basic weighted average shares outstanding (in shares)	29,338,329	20,028,227	20,130,835
Effect of dilutive options and restricted stock units (in shares)	0	136,000	153,000
Diluted weighted average shares outstanding (in shares)	29,338,329	20,164,638	20,284,137
Diluted undistributed net income per share attributable to common shares (usd per share)	$ 23.73	$ 3.05	$ 3.02