Share-Based Compensation Arrangements (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified			3 Months Ended		9 Months Ended			9 Months Ended		12 Months Ended		3 Months Ended		9 Months Ended			3 Months Ended	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Stock Appreciation Rights And Phantom Shares [Member]	Sep. 30, 2013 Stock Appreciation Rights And Phantom Shares [Member]	Sep. 30, 2014 Stock Appreciation Rights And Phantom Shares [Member]	Sep. 30, 2013 Stock Appreciation Rights And Phantom Shares [Member]	Dec. 31, 2013 Stock Appreciation Rights And Phantom Shares [Member]	Sep. 30, 2014 Phantom Share Units (PSUs) [Member]	Sep. 30, 2011 Phantom Share Units (PSUs) [Member]	Dec. 31, 2013 Phantom Share Units (PSUs) [Member]	Dec. 31, 2012 Phantom Share Units (PSUs) [Member]	Sep. 30, 2014 DSUs [Member]	Sep. 30, 2013 DSUs [Member]	Sep. 30, 2014 DSUs [Member]	Sep. 30, 2013 DSUs [Member]	Dec. 31, 2013 DSUs [Member]	Sep. 30, 2014 Restricted Stock Units (RSUs) [Member]	Sep. 30, 2014 Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights percentage per year								33.33%
Award vesting period								3 years
Performance based phantom shares issued									0	23,642	435,866
Common stock price	$ 4.30	$ 9.05
Share based compensation expense			$ (0.1)	$ (0.3)	$ (0.7)	$ 2.1						$ 0	$ (0.2)	$ (0.2)	$ 0.8		$ 0.1	$ 0.1
Share based compensation, unrecognized liability							1.7	0
Cash paid under SAR and DSU plan					1.0	1.6								0.7	0.2
Percentage of RSUs settled in shares																		75.00%
Percent settled in cash																		25.00%
Liability for DSU deferred compensation												$ 0.2		$ 0.2		$ 1.2