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Note 5 - Agreements and Commitments (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

		March 31, 2020				December 31, 2019
Balance at December 31		$	813,288			$	432,225
Warranty costs charged to cost of goods sold			226,079				707,079
Utilization charges against reserve			(51,643	)			(315,556	)
Release of accrual related to expired warranties			-				-
Foreign currency effect			(17,679	)			(10,460	)
Balance at March 31		$	970,045			$	813,288

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- Definition

Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249

+ Details

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Period Type:	duration

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- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration