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RELATED-PARTY TRANSACTIONS - Sale of Shares to and Purchase of Shares from SECT (Details) - shares | Dec. 28, 2017 | Dec. 31, 2017 | Feb. 13, 2017
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Greater Than 5% Shareholder, Evercore Trust Company |  |  |
Related Party Transaction [Line Items] |  |  |
Common stock, shares outstanding (in shares) |  | 2,500,000 |
Company ownership percentage maximum threshold |  |  | 5.00%
Common Stock | Variable Interest Entity, Primary Beneficiary |  |  |
Related Party Transaction [Line Items] |  |  |
Number of shares repurchased (in shares) | 2,500,000 |  |

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