Stockholders' Equity and Earnings Per Common Share - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Stockholders Equity and Earnings Per Common Share Additional Information [Abstract]
Exercise Price Floor on Outstanding Stock Options	$ 11.37
Exercise Price Ceiling on Outstanding Stock Options	$ 26.29
Outstanding Restricted Stock Unit Grant Prices Lower Limit	$ 19.38
Outstanding Restricted Stock Unit Grant Prices Upper Limit	$ 34.73
Outstanding Performance Share Unit Awards Grant Price Range Lower Limit	$ 23.97
Outstanding Performance Share Unit Awards Grant Price Range Upper Limit	$ 33.86
Number of Antidilutive Securities Excluded from Computation of Earnings Per Share		400,000
Authorized Shares of Preferred Stock	25,000,000
Par Value Per Share of Preferred Stock	$ 0.10
Issued Shares of Preferred Stock	0