Note 16 - Income Tax (Details) - Gross Operating Loss Carryforwards (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Operating Loss Carryforwards [Line Items]
Loss Carry Forward	$ 79,932	$ 91,957
Foreign [Member]
Operating Loss Carryforwards [Line Items]
Loss Carry Forward	45,508	46,901
Valuation Allowance	32,937	41,412
Net	12,571	5,489
Capital Loss Carryforward [Member] \| Canada Revenue Agency [Member]
Operating Loss Carryforwards [Line Items]
Loss Carry Forward	4,655	939
Valuation Allowance	4,655	939
Capital Loss Carryforward [Member] \| Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards [Line Items]
Loss Carry Forward		4,197
Valuation Allowance		4,197
Capital Loss Carryforward [Member] \| Australian Taxation Office [Member]
Operating Loss Carryforwards [Line Items]
Loss Carry Forward	7,434	8,123
Valuation Allowance	7,434	8,123
Canada Revenue Agency [Member]
Operating Loss Carryforwards [Line Items]
Loss Carry Forward	57,929	72,526
Valuation Allowance	264	2,438
Net	57,665	70,088
Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards [Line Items]
Loss Carry Forward	145,269	164,414
Valuation Allowance	4,099	4,099
Net	141,170	160,315
Australian Taxation Office [Member]
Operating Loss Carryforwards [Line Items]
Loss Carry Forward		304
Net		$ 304

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized.

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