Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2014	Dec. 31, 2015
Income Taxes [Line Items]
Discontinued operations, benefit from income taxes		$ 4,300,000
Valuation allowance, methodologies and assumptions	In assessing the ability to realize the deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which these temporary differences become deductible. Management considers the projected future taxable income and prudent and feasible tax planning strategies in making this assessment.
Net operating loss carryforwards	$ 34,900,000		$ 29,900,000
Provision for U.S. income taxes on unremitted foreign earnings	0
Liability for uncertain tax positions, current	0		0
Liability for uncertain tax positions, long-term	0		0
State [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	$ 9,000,000		9,600,000
State [Member] | Earliest Tax Year [Member]
Income Taxes [Line Items]
Net operating loss carryforwards, expiration date	Dec. 31, 2021
State [Member] | Latest Tax Year [Member]
Income Taxes [Line Items]
Net operating loss carryforwards, expiration date	Dec. 31, 2036
Foreign [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	$ 22,700,000		16,500,000
Foreign [Member] | Earliest Tax Year [Member] | Canada [Member]
Income Taxes [Line Items]
Net operating loss carryforwards, expiration date	Jan. 01, 2033
Federal [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	$ 500,000		$ 3,800,000
Federal [Member] | Earliest Tax Year [Member]
Income Taxes [Line Items]
Net operating loss carryforwards, expiration date	Jan. 01, 2022