Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	1 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Nov. 30, 2018
Capitalized Contract Cost, Net, Total	$ 3,300,000	$ 3,300,000		$ 3,300,000
Capitalized Contract Cost, Accumulated Amortization	1,500,000	1,500,000		1,500,000
Contract with Customer, Asset, Net, Total	2,900,000	2,900,000		2,900,000
Revenue, Remaining Performance Obligation, Amount	2,400,000	2,400,000		2,400,000
Foreign Currency Transaction Gain (Loss), before Tax, Total				100,000	$ (300,000)	$ 800,000
Reinsurance Retention Policy, Amount Retained				400,000	800,000
Equity Method Investment, Other than Temporary Impairment		1,800,000		1,804,000
Retained Earnings (Accumulated Deficit), Ending Balance	$ (17,335,000)	$ (17,335,000)		$ (17,335,000)	(43,459,000)
Accounting Standards Update 2014-09 [Member]
Retained Earnings (Accumulated Deficit), Ending Balance					1,500,000
Xpress Global Sytems [Member]
Equity Method Investment, Ownership Percentage	10.00%	10.00%		10.00%			10.00%
Equity Method Investment, Other than Temporary Impairment	$ 900,000			$ 900,000
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Largest Customer [Member]
Concentration Risk, Percentage				11.80%
Term Loan [Member]
Debt Issuance Costs, Net, Total	1,300,000	$ 1,300,000		$ 1,300,000	6,500,000
Credit Facility [Member] | Revolving Credit Facility [Member]
Debt Issuance Costs, Gross	1,500,000	1,500,000		1,500,000	3,200,000
Accumulated Amortization, Debt Issuance Costs	$ 200,000	$ 200,000		200,000	2,500,000
Revolving and Term Loan Facility [Member]
Amortization of Debt Issuance Costs				1,600,000	3,400,000	$ 4,900,000
Customer Relationships [Member]
Impairment of Intangible Assets, Finite-lived				$ 0	$ 0
Minimum [Member] | Scenario, Forecast [Member] | Accounting Standards Update 2016-02 [Member]
Impact of Adoption of Accounting Standards Update			$ 175,000,000
Minimum [Member] | Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life				7 years
Maximum [Member] | Scenario, Forecast [Member] | Accounting Standards Update 2016-02 [Member]
Impact of Adoption of Accounting Standards Update			$ 185,000,000
Maximum [Member] | Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life				15 years
Revenue Equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Salvage Value, Percentage	25.00%	25.00%		25.00%
Revenue Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Salvage Value, Percentage	50.00%	50.00%		50.00%
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Revenue Equipment [Member]
Disposal Group, Including Discontinued Operation, Assets, Total	$ 5,200,000	$ 5,200,000		$ 5,200,000
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Assets of a Business [Member]
Disposal Group, Including Discontinued Operation, Assets, Total	$ 28,000,000	$ 28,000,000		$ 28,000,000