Annual report pursuant to Section 13 and 15(d)

Fair Value Measurement (Details 1)

v3.6.0.2
Fair Value Measurement (Details 1) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Fair Value Disclosures [Abstract]    
Change in fair value of Viking convertible notes $ 0.2 $ 0.8