Annual report pursuant to Section 13 and 15(d)

Quarterly Financial Data (Unaudited) (Narrative) (Detail)

v3.3.1.900
Quarterly Financial Data (Unaudited) (Narrative) (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Schedule of Quarterly Financial Information [Line Items]                      
Expenses                 $ 1,163,868 $ 911,259 $ 790,591
Deferred income tax benefit from reversal of valuation allowance         $ 5,575 $ 17,255          
Deferred income tax benefit from reversal of valuation allowance, per share         $ 0.03 $ 0.08          
Preliminary allocations of purchase price         $ 2,955            
Non Cash Compensation                      
Schedule of Quarterly Financial Information [Line Items]                      
Expenses $ 2,833 $ 242 $ 2,424 $ 3,260 $ 2,852 $ 3,679 $ 2,083 $ 1,927