Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Name:	us-gaap_RestructuringCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Note 13 - Restructuring Costs (Details Textual)	1 Months Ended	3 Months Ended		6 Months Ended
Note 13 - Restructuring Costs (Details Textual)	Jan. 31, 2019 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2019 USD ($)
Restructuring and Related Cost, Number of Positions Eliminated	40
Restructuring Charges, Total	$ 742,000			$ 742,000
Restructuring Reserve, Ending Balance						$ 24,000