(Loss) Income 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, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Earnings Per Share [Abstract]
Weighted average common shares outstanding – basic	166,517	165,841	166,327	162,866
Effect of dilutive securities:
Director and employee stock options and SARs	0	619	0	819
Weighted average common shares outstanding – diluted	166,517	166,460	166,327	163,685