Stock Based Compensation - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercised		2,425
Weighted-average exercise price of options exercised		$ 22.35
Options outstanding		0
Total intrinsic value of options exercised	$ 0	$ 118	$ 346
Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuance under the plan	496,455
Omnibus Incentive Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash-based award paid to a single participant in any calendar year	2,000
Aggregate number of common stock for issuance under the plan	750,000
Period of years for which the 750,000 shares can be granted over	5 years
Shares granted to any single participant in any calendar year	50,000
Omnibus Incentive Plan | Employee Stock Options | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term Period	10
Omnibus Incentive Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Unrecognized compensation expense, net	6,467
Unrecognized compensation expense, net, weighted average period	1 year 9 months 18 days
Weighted average grant date fair value	$ 82.18	$ 105.22	$ 104.07
Total fair value of restricted stock vested	4,995	4,696	2,712
Omnibus Incentive Plan | Phantom Share Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Units granted	14,590
Units vested	6,156
Units forfeited	1,304
Total fair value of units outstanding	$ 831