Note 9 - Equity Method Investment - TEL's Summarized Financial Information - Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenue	$ 18,299	$ 29,359	$ 64,543	$ 72,559
Operating Expenses	15,439	27,096	55,753	64,301
Operating Income	2,860	2,263	8,790	8,258
Net Income	$ 1,499	$ 1,165	$ 5,188	$ 4,977

The amount of the cost of sales reported by an equity method investment of the entity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721683-107760

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Amount of income (loss) from continuing operations reported by an equity method investee.

+ References

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The amount of net income (loss) reported by an equity method investment of the entity.

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-Publisher FASB
-Name Accounting Standards Codification
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The amount of revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an equity method investment of the entity.

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