Represents the maximum outstanding balance allowed under the debt agreement.

No definition available.

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- Definition

Represents percentage of equipment of Company's affiliates used to secure debt instrument.

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No definition available.

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- Definition

Represents maximum decrease in percentage points added to an initial annual rate based on the Company's fixed charge coverage ratio for each of the most recently ended four quarters.

+ References

No definition available.

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Represents the increase added to an initial annual rate based on the fixed charge coverage ratio at the end of the following two quarters.

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No definition available.

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Period Type:	duration

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Represents number of monthly installments for a debt instrument.

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No definition available.

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Represents percentage of the appraised value of collateral pledged for loans.

+ References

No definition available.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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Period Type:	instant

- Definition

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

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Balance Type:	credit
Period Type:	instant

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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No definition available.

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Carrying value as of the balance sheet date of notes payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

+ References

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The cash outflow for incremental, external costs directly pertaining to an early extinguishment of debt, including legal costs and prepayment penalties, and excluding interest and repayment of debt principal.

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No definition available.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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-URI http://asc.fasb.org/extlink&oid=6513228

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The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with either short term or long term maturity that is collateralized (backed by pledge, mortgage or other lien in the entity's assets).

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Note 9 - Line of Credit and Long-term Debt (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	May 29, 2015
Long-term Debt	$ 5,394	$ 20,180
Repayments of Long-term Debt		3,217
Proceeds from Issuance of Long-term Debt		20,000
Proceeds from Secured Lines of Credit	(15,871)	14,550
Gain (Loss) on Extinguishment of Debt		(240)
Notes Payable, Noncurrent	2,700
Current Maturities of Long-term Debt [Member]
Capital Lease Obligations	400
Credit Facility [Member]
Gain (Loss) on Extinguishment of Debt		200
Notes Payable for Transportation and Construction Equipment [Member]
Notes Payable, Noncurrent	$ 2,700	3,300
Notes Payable for Transportation and Construction Equipment [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage	3.12%
Debt Instrument, Term	3 years
Notes Payable for Transportation and Construction Equipment [Member] \| Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage	6.92%
Debt Instrument, Term	5 years
Nations [Member] \| Asset-based Facility [Member]
Debt Instrument, Face Amount				$ 40,000
Long-term Debt	$ 3,500	18,000		20,000
Debt Agreement, Maximum Borrowing Capacity				$ 40,000
Debt Instrument, Percentage of Appraised Value of Collateral				65.00%
Line of Credit Facility, Current Borrowing Capacity	24,400
Repayments of Long-term Debt	10,000
Line of Credit Facility, Remaining Borrowing Capacity	$ 20,000
Debt Instrument, Interest Rate, Stated Percentage	12.00%
Debt Instrument, Decrease in Basis Spread on Variable Rate	2.00%
Debt Instrument, Increase in Basis Spread on Variable Rate	2.00%
Debt Instrument, Number of Monthly Installments	47
Debt Instrument, Collateral as Percentage of Equipment	50.00%
Proceeds from Issuance of Long-term Debt	$ 20,000
Interest Expense, Debt	2,600	2,900	$ 1,000
Nations [Member] \| Asset-based Facility [Member] \| Interest Expense [Member]
Repayments of Long-term Debt		0
Payments of Debt Extinguishment Costs	300
Nations [Member] \| Asset-based Facility [Member] \| Other Noncurrent Assets [Member]
Debt Issuance Costs, Net	1,300
Nations [Member] \| Asset-based Facility [Member] \| Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity				$ 20,000
Line of Credit Facility, Remaining Borrowing Capacity	20,000	11,600
Proceeds from Secured Lines of Credit	14,600
Long-term Line of Credit	0	0
Nations [Member] \| Equipment-based Facility [Member]
Long-term Debt	2,729	16,838
Debt Issuance Costs, Net	803	1,119
Long-term Debt, Fair Value	$ 3,500	$ 18,000