Stockholders' Equity (Narrative) (Detail) (USD $)	9 Months Ended		9 Months Ended		1 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Net Share Settlements	Sep. 30, 2013 Net Share Settlements	Mar. 31, 2014 Three-Year Period	Mar. 31, 2014 Four-Year Period
Class of Stock [Line Items]
Common stock, shares authorized	80,000,000	80,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock issued from treasury stock	250,000
Restricted shares of common stock granted					414,900	294,909
Restricted shares of common stock vesting period, (in years)					3 years	4 years
Restricted stock granted	1,032,125
Treasury shares acquired, shares			253,056	256,811
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares issued	0	0