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LONG-TERM DEBT AND FINANCING ARRANGEMENTS (Condensed) (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jan. 02, 2015 | Apr. 30, 2016 | Nov. 30, 2014 | Mar. 31, 2016 | Dec. 31, 2015 | Jan. 31, 2015
Financing Arrangements |  |  |  |  |  |
Amounts collateralized by restricted funds |  |  |  | $ 1,385 | $ 1,384 |
Interest rate swap agreement |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |
Term of swap agreement |  |  | 5 years |  |  |
Notional amount |  |  |  | $ 50,000 |  |
Fixed interest rate payments (as a percent) |  |  |  | 1.85% |  |
Interest rate swap agreement | Other long-term liabilities |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |
Fair value |  |  |  | $ 1,800 | $ 900 |
Credit Facility |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |
Term loan balance refinanced with revolving credit facility | $ 70,000 |  |  |  |  |
Maximum borrowing capacity |  |  |  | 150,000 |  |
Additional borrowing capacity that may be requested |  |  |  | 75,000 |  |
Credit Facility | Interest rate swap agreement |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |
Amount of borrowings covered by the interest rate swap |  |  |  | $ 50,000 |  |
Effective fixed interest rate on hedged borrowings (as a percent) |  |  |  | 3.10% |  |
Letters of Credit, Sub-Facility |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |
Maximum borrowing capacity |  |  |  | $ 20,000 |  |
Accounts receivable securitization program |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |
Maximum borrowing capacity |  |  |  | 100,000 |  | $ 75,000
Additional borrowing capacity that may be requested |  |  |  | 25,000 |  |
Amount outstanding |  |  |  | 35,000 |  |
Outstanding letters of credit |  |  |  | 19,900 |  |
Remaining borrowing capacity |  |  |  | 45,100 |  |
Letter of Credit Agreements |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |
Outstanding letters of credit |  |  |  | 21,900 |  |
Amounts collateralized by restricted funds |  |  |  | 1,400 |  |
Surety bonds |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |
Outstanding surety bonds under uncollateralized bond programs |  |  |  | 44,700 |  |
Revenue equipment | Freight Transportation (ABF Freight) | Notes payable |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |
Equipment financed during the period under notes payable |  |  |  | $ 1,900 |  |
Revenue equipment | Freight Transportation (ABF Freight) | Notes payable | Subsequent Event |  |  |  |  |  |
Financing Arrangements |  |  |  |  |  |
Equipment financed during the period under notes payable |  | $ 9,300 |  |  |  |

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