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LONG-TERM DEBT (Details) (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011
Line of Credit Facility and Equipment Financing [Line Items] |  |  |  |
Line of credit with a bank-due June 1, 2014, and collateralized by accounts receivable | $ 1,101,000 |  |  |
Total long-term debt | 107,501,000 |  | 61,573,000 |
Less current maturities | (28,918,000) |  | (17,438,000) |
Long-term debt - net of current maturities | 78,583,000 |  | 44,135,000 |
Maturities of long-term debt [Abstract] |  |  |  |
2013 | 28,918,000 |  |  |
2014 | 37,689,000 |  |  |
2015 | 38,674,000 |  |  |
2016 | 1,408,000 |  |  |
2017 | 812,000 |  |  |
Total | 107,501,000 |  |  |
Equipment financing [Member] |  |  |  |
Line of Credit Facility and Equipment Financing [Line Items] |  |  |  |
Total long-term debt | 102,084,000 | [1] | 52,245,000 | [1]
Maturity date | Sep. 30, 2017 |  |  |
Line of Credit [Member] |  |  |  |
Line of Credit Facility and Equipment Financing [Line Items] |  |  |  |
Line of credit with a bank-due June 1, 2014, and collateralized by accounts receivable | 5,417,000 | [2] | 9,328,000 | [2]
Face amount of debt | 35,000,000 |  |  |
Basis spread on variable rate (in hundredths) | 1.95% |  |  |
Required debt to equity ratio | 2 |  |  |
Tangible net worth required by bank covenants | 115,000,000 |  |  |
Weighted average interest rate (in hundredths) | 2.16% |  |  |
Line of Credit [Member] | Equipment financing [Member] |  |  |  |
Line of Credit Facility and Equipment Financing [Line Items] |  |  |  |
Weighted average interest rate (in hundredths) | 3.02% |  |  |
Letter of Credit [Member] |  |  |  |
Line of Credit Facility and Equipment Financing [Line Items] |  |  |  |
Line of credit with a bank-due June 1, 2014, and collateralized by accounts receivable | $ 1,101,000 |  |  |
[1] | Equipment financings consist of installment obligations for revenue equipment purchases, payable in various monthly installments with various maturity dates through September 2017, at a weighted average interest rate of 3.02% as of December 31, 2012 and collateralized by revenue equipment.
[2] | Line of credit agreement with a bank provides for maximum borrowings of $35.0 million and contains certain restrictive covenants that must be maintained by the Company on a consolidated basis. Borrowings on the line of credit are at an interest rate of LIBOR as of the first day of the month plus 1.95% (2.16% at December 31, 2012) and are secured by our trade accounts receivable. Monthly payments of interest are required under this agreement. Also, under the terms of the agreement the Company must have (a) a debt to equity ratio of no more than 2:1, and (b) maintain a tangible net worth of at least $115 million. The Company was in compliance with all provisions of the agreement throughout 2012.

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