Annual report pursuant to Section 13 and 15(d)

Earnings per Share - Earnings per Share (Parenthetical) (Details)

v3.3.1.900
Earnings per Share - Earnings per Share (Parenthetical) (Details)
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
7% Exchangeable Senior Subordinated Notes due 2014 [Member]      
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]      
Interest rate on instrument 7.00% 7.00% 7.00%