Note 3 - Intangible Assets (Details Textual) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2017
USD ($)
|
Jun. 30, 2016
USD ($)
|
Jun. 30, 2017
USD ($)
|
Jun. 30, 2016
USD ($)
|
|
| Amortization of Intangible Assets | $ 95,000 | $ 138,000 | $ 189,000 | $ 240,000 |
| PCB Permit [Member] | ||||
| Number of Definite-lived Permits | 1 | |||
| X | ||||||||||
- Definition Represents the number of definite lived permits. No definition available.
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| X | ||||||||||
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Details
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