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RELATED-PARTY TRANSACTIONS - Legion Affiliates (Details) - Greater Than 5% Shareholder, Legion Partners Asset Management, LLC | Mar. 13, 2017 USD ($) shares
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Related Party Transaction [Line Items] |
Ownership percentage | 6.60%
Reimbursable expense threshold | $ | $ 100,000
Voting Common Stock |
Related Party Transaction [Line Items] |
Common stock, shares outstanding (in shares) | shares | 3,287,879
Company ownership percentage maximum threshold | 10.00%

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