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VARIABLE INTEREST ENTITIES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016	Feb. 08, 2016
Variable Interest Entity [Line Items]
Cash and Cash Equivalents, at Carrying Value	$ 68,315	$ 81,685	$ 143,570	$ 112,429	$ 143,570
Inventories	412,238	395,735
Property, Plant and Equipment, Net	378,684	384,872
Other Assets, Noncurrent	109,099	86,903
Total assets	1,325,256	1,251,256
Total current liabilities	439,244	375,068
Total liabilities	964,785	861,346
Accounts payable	250,918	212,129
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Cash and Cash Equivalents, at Carrying Value	12,055	9,064
Inventories	17,046	12,987
Other Assets, Current	44,970	38,533
Property, Plant and Equipment, Net	28,593	28,057
Other Assets, Noncurrent	3,348	2,971
Total assets	106,012	91,612
Total current liabilities	49,350	36,246
Liabilities, Noncurrent	5,986	6,353
Total liabilities	55,336	42,599
Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Other Assets, Current	1,248	1,200
Investments	4,017	3,985
Total VIE assets	5,265	5,185
Accounts payable	2,185	2,350
Maximum exposure to loss	$ 7,450	$ 7,535
Titan Tire Reclamation Corporation [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	50.00%
Titan National Australia Holdings [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	40.00%
Titan Tire Russia B.V. [Member]
Variable Interest Entity [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent						43.00%