Annual report pursuant to Section 13 and 15(d)

Leases (Details Textual)

v3.6.0.2
Leases (Details Textual) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Leases [Abstract]      
Capital leases of lessee, interest rate 2.00%    
Operating leases, rent expense $ 18.8 $ 7.8 $ 2.6