Amount, before allowance for credit loss, of financing receivable, classified as current.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Note 8 - Subsequent Events (Details Textual) - USD ($)	1 Months Ended	3 Months Ended	6 Months Ended
Note 8 - Subsequent Events (Details Textual) - USD ($)	Aug. 04, 2019	Jun. 30, 2019	Jun. 30, 2019	Jun. 30, 2018
Proceeds from Collection of Notes Receivable			$ 1,000,000
S&L Note [Member]
Proceeds from Collection of Notes Receivable		$ 160,000	$ 803,000
S&L Note [Member] \| Subsequent Event [Member]
Proceeds from Collection of Notes Receivable	$ 204,000
Financing Receivable, before Allowance for Credit Loss, Current	$ 3,334,000