ORGANIZATION AND BASIS OF PRESENTATION Narrative 3 - Selby Fire (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Oct. 15, 2019 |
Mar. 31, 2021 |
Mar. 31, 2020 |
Dec. 31, 2020 |
|
| Unusual or Infrequent Item, or Both [Line Items] | ||||
| Impact of fire at Selby, CA terminal | our terminal facility in Selby, California experienced a fire that destroyed two storage tanks and temporarily shut down the terminal | |||
| Insurance proceeds received | $ 20,500 | $ 11,900 | $ 35,000 | |
| Business Interruption Insurance from Selby, California Fire [Member] | Operating Expense [Member] | ||||
| Unusual or Infrequent Item, or Both [Line Items] | ||||
| Insurance proceeds received | $ 4,000 | $ 3,100 | ||