INCOME TAXES (NOL) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
State
Tax Carryforwards [Line Items]
Operating loss carryforwards	$ 29.7
Contribution carryforwards	$ 1.1
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
State | Panther
Tax Carryforwards [Line Items]
Operating loss carryforwards	$ 6.3
Foreign
Tax Carryforwards [Line Items]
Valuation allowance related to net operating loss carryforwards	0.3	$ 0.3
Federal | Panther
Tax Carryforwards [Line Items]
Operating loss carryforwards	$ 1.7
Net operating loss carryforwards expiration period	15 years
Foreign tax credit carryforward
Tax Carryforwards [Line Items]
Net decrease in valuation allowance		$ 0.7
Minimum | State
Tax Carryforwards [Line Items]
State net operating loss and contribution carryforwards expiration period	5 years
Minimum | State | Panther
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 | State | Panther
Tax Carryforwards [Line Items]
Net operating loss carryforwards expiration period	20 years
Maximum | Federal
Tax Carryforwards [Line Items]
Adjustment for completed audit			$ 0.1