Employee Benefit Plan - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended				1 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 First 4% of Employee Contribution [Member]	Jan. 31, 2014 Subsequent Event [Member] Second 2% of Employee Contribution [Member]	Jan. 31, 2014 Subsequent Event [Member] Second 2% of Employee Contribution [Member] Minimum [Member]	Jan. 31, 2014 Subsequent Event [Member] Second 2% of Employee Contribution [Member] Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contribution rate as a percentage of employee contribution				25.00%	50.00%
Percentage contribution from employees				4.00%	2.00%	4.00%	6.00%
Employer Contribution on employee benefit plan	$ 0.3	$ 0.3	$ 0.2