Allowance for Losses (Details Textual) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for Losses (Textual) [Abstract]
Allowances for trade receivables	$ (10.3)	$ (5.7)	$ (5.2)
Allowance for Trade Receivables [Member]
Allowance for Losses (Textual) [Abstract]
Allowances for trade receivables	$ (6.3)	$ (4.5)
Allowances for trade receivables as percentage of rent and other receivables	9.10%	5.20%
Allowance for Finance Leases [Member]
Allowance for Losses (Textual) [Abstract]
Allowances for trade receivables	$ (4.0)	$ 1.2