Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Examination [Line Items]
Federal statutory tax rate	34.00%
Effective income tax rate on earnings	(75.60%)	107.20%	19.40%
Valuation allowance	$ 52,002,000	$ 48,453,000
Change in valuation allowance (less than)	3,500,000
Gross deferred tax assets	58,043,000	58,100,000
Operating loss carryforwards, subject to annual limitation	15,200,000
Operating loss carryforwards, annual limitation	1,400,000
U.S. Federal Tax Authority [Member]
Income Tax Examination [Line Items]
Operating loss carryforwards	87,600,000
State Jurisdiction [Member]
Income Tax Examination [Line Items]
Operating loss carryforwards	92,100,000
Foreign Subsidiary [Member]
Income Tax Examination [Line Items]
Valuation allowance	2,300,000
Gross deferred tax assets	2,300,000
Canadian Subsidiary [Member]
Income Tax Examination [Line Items]
Undistributed earnings of international subsidiaries	$ 200,000	$ 400,000	200,000