Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Tax [Line Items]
Effective Income Tax Rate	46.70%	35.70%	46.50%	35.50%
Percentage of Increase in effective tax rate			9.00%
Limitations on deductibility of excess annual employee compensation as mandated by health insurance reforms		$ 500,000		$ 500,000