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Note 3 - Accounting Policies - Summary of Product Sales Allowances (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)
Balance	$ 342
Provision	1,482
Payments/credits	(362)
Balance	1,462
Allowance for Sales Returns [Member]
Balance	49
Provision	153
Payments/credits
Balance	202
Allowance for Distributor Fees [Member]
Balance	72
Provision	215
Payments/credits	(119)
Balance	168
Allowance for Rebates and Chargebacks [Member]
Balance	221
Provision	1,114
Payments/credits	(243)
Balance	$ 1,092

X

- Definition

Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from provisions of amounts previously written off or reestablishment of reserves that had previously been utilized.

+ References

No definition available.

+ Details

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X

- Definition

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

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X

- Definition

Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

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