Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Commitments and Contingencies (Narrative) (Details)

v3.3.1.900
Commitments and Contingencies (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Commitments and Contingencies [Abstract]      
Rent expense $ 14.3 $ 10.7 $ 4.7