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Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Accounts Receivable, Allowance for Credit Loss, Ending Balance	$ 1,847		$ 1,847
Operating Lease, Right-of-Use Asset	73,692		0
Operating Lease, Liability, Total	74,018
Equity Method Investment, Other than Temporary Impairment	1,200
Deferred Tax Liabilities, Undistributed Foreign Earnings	$ 2,282		$ (0)
Queensland Partnership Group Pty. Ltd. [Member]
Equity Method Investment, Ownership Percentage	33.33%
Services Queensland Partnership [Member]
Equity Method Investment, Ownership Percentage	16.67%
Northern Australia Services Pty Ltd - NAS (v) [Member]
Equity Method Investment, Ownership Percentage	16.67%
Leasehold Improvements [Member]
Property, Plant and Equipment, Useful Life	7 years
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset		$ 74,420
Operating Lease, Liability, Total		$ 75,680