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STOCKHOLDERS' EQUITY - Restricted Stock Activity (Details) - Restricted Stock - 2016 Plan - $ / shares
9 Months Ended
Feb. 01, 2018
Sep. 30, 2018
Shares    
Nonvested, beginning balance (in shares)   58,032
Granted (in shares) 34,202 34,202
Vested (in shares)   (35,061)
Nonvested, ending balance (in shares)   57,173
Wtd. Avg. Price at Date of Issuance    
Nonvested, beginning balance (in dollars per share)   $ 28.59
Granted (in dollars per share)   16.19
Vested (in dollars per share)   26.31
Nonvested, ending balance (in dollars per share)   $ 22.57