Note 6 - Non-recourse Debt (Details Textual) - USD ($)			1 Months Ended
	Jun. 03, 2014	Aug. 07, 2013	Jun. 30, 2016	Mar. 31, 2007	Dec. 31, 2019	Sep. 30, 2019
Portfolio Purchase				$ 300,000,000
Receivables Financing Agreement Term				3 years
Percentage of Ownership in Subsidiaries		100.00%
Prepayment Fees		$ 15,000,000
Receivable Finance Agreement, Portfolio Purchase Collections, Percentage		30.00%
Debt Instrument, Final Principal Payment	$ 2,900,000
Voluntary Debt Prepayment	1,900,000
Receivable Finance Agreement, Collections from Portfolio Purchase	$ 16,900,000		$ 16,900,000
Bank of Montreal [Member]
Non-Recourse Debt					$ 77,000	$ 22,000
Receivables Financing Agreement [Member]
Non-Recourse Debt				$ 227,000,000