Employee Benefit Plans - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Benefit Plans (Textual) [Abstract]
Employee eligibility criteria for Compensation plan	6 months
Contribution by Plan participants as annual compensation percentage	15.00%
Plan Pro rata vesting period	5 years
Plan Expenses recognized	$ 0.4	$ 0.3	$ 0.3