XML 22 R7.htm IDEA: XBRL DOCUMENT v3.6.0.2
Consolidated Statements of Stockholders' Equity (Parenthetical)
Dec. 31, 2016
Dec. 31, 2015
1 1/4percent Convertible Senior Subordinated Notes Due December 15, 2036    
Debt Interest Rate 1.25% 1.25%