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Note 2 - Revenue Recognition - Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Contract with customer liability, balance	$ 3,593	$ 4,399
Trade Receivables [Member]
Contract with customer asset, balance	9,971
Accrued Revenues [Member] | Licensing and Other [Member]
Contract with customer asset, balance	6,745
Accrued Revenues [Member] | Royalty [Member]
Contract with customer asset, balance	9,440
Deferred Revenue [Member]
Contract with customer liability, balance	$ 3,593

X

- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130533-203044

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X

- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

+ References

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-Publisher FASB
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