XML 170 R150.htm IDEA: XBRL DOCUMENT v3.3.1.900
EMPLOYEE BENEFIT PLANS - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]      
Employee contribution on compensation, maximum 100.00%    
Employer contribution match on compensation 100.00%    
Percentage of employees' annual contribution, eligible for employers match 4.00%    
401(k) plan expense $ 3.6 $ 2.5 $ 1.7
2013 Omnibus Stock Incentive Plan      
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]      
Restricted stock awards issued under Employee Equity Ownership Plan 362,353