Note 5 - Lease Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Lease term			5 years
Fair Value Inputs, Discount Rate			6.00%
Present value of future lease payments			$ 1,754
Fair value of lease equipment			1,678
Present value of future maintenance exenses			76
Sales	$ 37,193	$ 30,508
Increase (Decrease) in Leasing Receivables	247	252
Property, Plant and Equipment
Sales			1,678
Deferred Revenue			$ 76
Proceeds from Lease Payments	307	307
Interest Income, Other	60	55
Increase (Decrease) in Leasing Receivables	$ 247	$ 252

No definition available.

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- Definition

Represents the monetary amount of Fair value of lease equipment, as of the indicated date.

+ References

No definition available.

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Represents the Lease term, during the indicated time period.

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Represents the monetary amount of Present value of future lease payments, as of the indicated date.

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Represents the monetary amount of Present value of future maintenance exenses, as of the indicated date.

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Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

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- Definition

The increase (decrease) during the reporting period in the amount due from lessees arising from lease agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of interest income earned from interest bearing assets classified as other.

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Amount of cash inflows from lease payments.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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