Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v2.4.0.8
Income Taxes - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended 0 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2014
Oct. 31, 2013
Tax-sharing agreement [Member]
Jun. 30, 2013
Tax-sharing agreement [Member]
Jun. 30, 2014
Tax-sharing agreement [Member]
Jun. 30, 2013
Tax-sharing agreement [Member]
Jun. 30, 2014
Forecasted 2014 tax rate [Member]
Income Taxes [Line Items]              
Effective tax rate 40.90% 41.10% 43.50% 43.50%   43.50% 40.50%
Tax benefit of deductible IPO transaction costs   $ 840          
Tax-sharing agreement termination date         Oct. 31, 2013