NONCONSOLIDATED VARIABLE INTEREST ENTITIES (Details) - Variable Interest Entity, Not Primary Beneficiary $ in Thousands	Jun. 30, 2019 USD ($) railcar	Dec. 31, 2018 USD ($)
Variable Interest Entity [Line Items]
Total assets	$ 11	$ 17
Total liabilities	10	10
Maximum exposure to loss	$ 1	7
Number of railcars with payment and performance obligations | railcar	1,483
Accounts receivable
Variable Interest Entity [Line Items]
Total assets	$ 11	17
Total liabilities	0	0
Maximum exposure to loss	1	7
Deferred revenue
Variable Interest Entity [Line Items]
Total assets	0	0
Total liabilities	10	10
Maximum exposure to loss	$ 0	$ 0