Loss Per Common Share - Basic Weighted Average Common Shares Outstanding to Diluted Weighted Average Common Shares Outstanding (Detail) - shares shares in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share [Abstract]
Weighted average common shares outstanding – basic	[1]	180,683	166,517	171,571	166,327
Effect of dilutive securities:
Director and employee SARs		0	0	0	0
Weighted average common shares outstanding – diluted		180,683	166,517	171,571	166,327

[1] Includes common stock issued in connection with the exchange of 77.0 million shares for all outstanding Memorial common stock on September 16, 2016.