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PREPAID AND OTHER CURRENT ASSETS (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
PREPAID AND OTHER CURRENT ASSETS    
Assets held for sale $ 7,112 $ 2,812
Other assets 2,529 3,546
Insurance 4,564 2,246
Other prepaids 1,562 1,104
Licensing, permits and tolls 3,031 2,772
Highway and fuel taxes 1,523 1,024
Total $ 20,321 $ 13,504