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PREPAID AND OTHER CURRENT ASSETS (Details) - USD ($)
$ in Millions
Mar. 31, 2020
Dec. 31, 2019
PREPAID AND OTHER CURRENT ASSETS    
Insurance $ 8.3 $ 10.1
Licensing, permits and tolls 4.7 5.4
Other assets 2.9 3.1
Other prepaids 1.3 1.7
Assets held for sale 69.8  
Highway and fuel taxes 1.2 1.6
Total $ 18.4 $ 21.9