Note 8 - Property, Plant and Equipment - Summary of Property, Including Leasehold Improvements, Held Under Capital Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Capital leased assets	$ 13,289	$ 14,800
Less: accumulated depreciation and amortization	(7,471)	(7,052)
Property held under capital leases, net	5,818	7,748
Land, Buildings and Support Assets [Member]
Capital leased assets	13,289	13,722
Outside Plant Cable and Wire Facilities [Member]
Capital leased assets		$ 1,078

Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 45
-Paragraph 1
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The total gross amount less the charge for the use of the long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
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The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

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