Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Detail)

v3.3.1.900
Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Business Acquisition [Line Items]        
Operating Loss Carryforwards $ 96,500 $ 37,100    
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense 26,053 10,808 $ 5,462 $ 3,750
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount (14,891) (3,087) (6,385)  
Provision (benefit) for income taxes (575) (1,704) 402  
Tax Credit Carryforward, Amount $ 33,200 37,000    
Tax Credit Carryforward, Expiration Date Dec. 31, 2020      
Federal Alternative Minimum Tax Credit Carryforward $ 1,000      
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount 14,931 3,087 6,385  
Valuation Allowance, Deferred Tax Asset, Release due to Acquisition, amount 1,757 2,335 $ 0  
Unrecognized tax expense (benefit), without valuation allowance remaining 20,700      
Income Tax Examination, Penalties and Interest Accrued $ 100      
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Other Information 0.1      
Stock Compensation Plan [Member]        
Business Acquisition [Line Items]        
Operating Loss Carryforwards $ 22,900 $ 3,800