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LONG-TERM DEBT AND FINANCING ARRANGEMENTS (Details 3) - USD ($) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 02, 2015 | Jul. 31, 2015 | Jun. 30, 2015 | Jun. 30, 2015 | Feb. 01, 2015 | Jan. 31, 2015 | Dec. 31, 2014
Financing Arrangements |  |  |  |  |  |  |
Amounts collateralized by restricted funds |  |  | $ 1,387 | $ 1,387 |  |  | $ 1,386
Interest rate swap agreement |  |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |  |
Term of swap agreement | 5 years |  |  |  |  |  |
Notional amount |  |  | $ 50,000 | $ 50,000 |  |  |
Fixed interest rate payments (as a percent) |  |  | 1.85% | 1.85% |  |  |
Interest rate swap agreement | Other long-term liabilities |  |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |  |
Fair value |  |  | $ 800 | $ 800 |  |  | $ 600
Interest rate swap agreement | LIBOR |  |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |  |
Period of reference rate for variable rate receivable |  |  |  | 1 month |  |  |
Letter of Credit Agreements |  |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |  |
Outstanding letters of credit |  |  | 22,300 | $ 22,300 |  |  |
Amounts collateralized by restricted funds |  |  | 1,400 | 1,400 |  |  |
Accounts receivable securitization program |  |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | 100,000 | 100,000 |  | $ 75,000 |
Additional borrowing capacity that may be requested |  |  |  |  | $ 25,000 |  |
Remaining borrowing capacity |  |  | 44,600 | 44,600 |  |  |
Accounts receivable securitization program | Letter of Credit Agreements |  |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |  |
Outstanding letters of credit |  |  | 20,400 | 20,400 |  |  |
Surety bonds |  |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |  |
Outstanding surety bonds under uncollateralized bond programs |  |  | 45,000 | 45,000 |  |  |
Revenue equipment | Freight Transportation (ABF Freight) | Notes payable |  |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |  |
Equipment financed during the period under notes payable |  |  | 12,700 | 12,700 |  |  |
Revenue equipment | Freight Transportation (ABF Freight) | Notes payable | Subsequent Event |  |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |  |
Equipment financed during the period under notes payable |  | $ 17,200 |  |  |  |  |
Amended and Restated Credit Agreement |  |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |  |
Term loan balance refinanced with revolving credit facility | $ 70,000 |  |  |  |  |  |
Additional borrowing capacity that may be requested |  |  | 75,000 | 75,000 |  |  |
Amended and Restated Credit Agreement | Credit Facility |  |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | 150,000 | 150,000 |  |  |
Amended and Restated Credit Agreement | Credit Facility | Interest rate swap agreement |  |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |  |
Amount of borrowings covered by the interest rate swap |  |  | $ 50,000 | $ 50,000 |  |  |
Effective fixed interest rate on hedged borrowings (as a percent) |  |  | 3.10% | 3.10% |  |  |
Amended and Restated Credit Agreement | Credit Facility | Letter of Credit Agreements |  |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | $ 20,000 | $ 20,000 |  |  |

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