Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Tax Disclosure [Abstract]
Effective Income Tax Rate	47.50%	37.20%	46.80%	36.00%
Percentage of Increase in effective tax rate			10.00%
Limitations on deductibility of excess annual employee compensation as mandated by health insurance reforms				$ 500,000