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Note 7 - Line of Credit and Long-term Debt - Long-term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Equipment-based Facility, net	$ 4,297	$ 5,394
Long-term Debt	4,297	5,394
Current maturities of long-term debt	3,541	4,648
Less current deferred loan costs	(602)	(803)
Less current maturities of long-term debt, net	(2,939)	(3,845)
Total long-term debt	1,358	1,549
Notes Payable for Transportation and Construction Equipment [Member]
Notes payable	2,388	2,665
Nations [Member] | Equipment-based Facility [Member]
Long-term Debt	2,511	3,532
Less deferred loan costs	(602)	(803)
Equipment-based Facility, net	1,909	2,729
Long-term Debt	$ 1,909	$ 2,729

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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