(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		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Abstract]
Weighted average common shares outstanding – basic	166,421	161,909	166,230	161,354
Effect of dilutive securities:
Director and employee stock options and SARs	0	904	0	969
Weighted average common shares outstanding – diluted	166,421	162,813	166,230	162,323