Income Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Loss Carryforwards [Line Items]
Operating loss carryforward expiration year	2018 to 2034
Valuation Allowance, Deferred Tax Asset, Change in Amount	$ 11.6	$ 10.2	$ 11.1
U.S
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	167.5
Non us
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 25.5