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 8 - Restructuring Charges (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Restructuring Charges, Total			$ 92
Reduction in Its Workforce to Reduce Expenses [Member]
Restructuring Charges, Total			92
Reduction in Its Workforce to Reduce Expenses [Member] \| Employee Severance [Member]
Restructuring Charges, Total			$ 700