Note 5 - Credit Facilities and Other Debt - Summary of Credit and Other Debt Facilities (Details) $ in Thousands	Sep. 30, 2018 USD ($)
Repayments of principal, 2018	$ 9,635
Repayments of principal, 2019	333
Repayments of principal, 2020	1,187
Repayments of principal, 2021	300
Repayments of principal, 2022	300
Repayments of principal, 2023	$ 1,100
Resource Plus Acquisition Note [Member]
Interest Rate	1.85%
Repayments of principal, 2018	$ 333
Repayments of principal, 2019	333
Repayments of principal, 2020	334
Repayments of principal, 2021	300
Repayments of principal, 2022	300
Repayments of principal, 2023	$ 1,100
PNC Bank, National Association [Member]
Interest Rate	4.756%
Repayments of principal, 2018	$ 8,217
Repayments of principal, 2019
Repayments of principal, 2020
Repayments of principal, 2021
Repayments of principal, 2022
Repayments of principal, 2023
Fifth Third Bank [Member]
Interest Rate	4.725%
Repayments of principal, 2018
Repayments of principal, 2019
Repayments of principal, 2020	682
Repayments of principal, 2021
Repayments of principal, 2022
Repayments of principal, 2023
National Australia Bank [Member]
Interest Rate	6.60%
Repayments of principal, 2018	$ 400
Repayments of principal, 2019
Repayments of principal, 2020
Repayments of principal, 2021
Repayments of principal, 2022
Repayments of principal, 2023
Bancomer Bank and Shareholder Loan [Member]
Repayments of principal, 2018	161
Repayments of principal, 2019
Repayments of principal, 2020	171
Repayments of principal, 2021
Repayments of principal, 2022
Repayments of principal, 2023
Bancomer Bank and Shareholder Loan [Member] \| Minimum [Member]
Interest Rate	7.75%
Bancomer Bank and Shareholder Loan [Member] \| Maximum [Member]
Interest Rate	12.11%
Various Banks in Brazil [Member]
Repayments of principal, 2018	$ 524
Repayments of principal, 2019
Repayments of principal, 2020
Repayments of principal, 2021
Repayments of principal, 2022
Repayments of principal, 2023
Various Banks in Brazil [Member] \| Minimum [Member]
Interest Rate	11.04%
Various Banks in Brazil [Member] \| Maximum [Member]
Interest Rate	14.28%

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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