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Income Taxes (Narrative) (Details) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Operating Loss Carryforwards, Expiration Date Substantially all of the net operating loss carry forwards and unused minimum tax credit carry forwards expire between 2025 and 2035.  
Operating Loss Carryforwards, Limitations on Use The Company’s utilization of restricted net operating tax loss carry forwards against future income for tax purposes is restricted pursuant to the “change in ownership” rules in Section 382 of the Internal Revenue Code. The Company’s utilization of restricted net operating tax loss carry forwards against future income for tax purposes is restricted pursuant to the “change in ownership” rules in Section 382 of the Internal Revenue Code.
Approximations [Member]    
Operating loss carryforwards $ 87.2  
Tax Credit Carryforward, Amount 0.5  
Unrestricted [Member] | Approximations [Member]    
Operating loss carryforwards 58.4  
Restricted [Member] | Approximations [Member]    
Operating loss carryforwards $ 28.8