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INCOME TAXES (NOL) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
State |  |  |
Tax Carryforwards [Line Items] |  |  |
Operating loss carryforwards | $ 21.4 |  |
Contribution carryforwards | $ 1.0 |  |
Majority of state net operating loss and contribution carryforwards, expiration period one | 15 years |  |
Majority of state net operating loss and contribution carryforwards, expiration period two | 20 years |  |
Foreign |  |  |
Tax Carryforwards [Line Items] |  |  |
Valuation allowance related to net operating loss carryforwards | $ 0.3 | $ 0.3 |
Foreign tax credit carryforward |  |  |
Tax Carryforwards [Line Items] |  |  |
Net decrease in valuation allowance |  | $ 0.7 |
Certain state net operating losses and state deferred tax assets | State |  |  |
Tax Carryforwards [Line Items] |  |  |
Net decrease in valuation allowance |  |  | $ 1.5
Premium Logistics (Panther) | State |  |  |
Tax Carryforwards [Line Items] |  |  |
Operating loss carryforwards | 7.6 |  |
Premium Logistics (Panther) | Federal |  |  |
Tax Carryforwards [Line Items] |  |  |
Operating loss carryforwards | $ 1.9 |  |
Net operating loss carryforwards expiration period | 16 years |  |
Minimum | State |  |  |
Tax Carryforwards [Line Items] |  |  |
State net operating loss and contribution carryforwards expiration period | 5 years |  |
Minimum | Premium Logistics (Panther) | State |  |  |
Tax Carryforwards [Line Items] |  |  |
Net operating loss carryforwards expiration period | 5 years |  |
Maximum | State |  |  |
Tax Carryforwards [Line Items] |  |  |
State net operating loss and contribution carryforwards expiration period | 20 years |  |
Maximum | Premium Logistics (Panther) | State |  |  |
Tax Carryforwards [Line Items] |  |  |
Net operating loss carryforwards expiration period | 20 years |  |

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