EQUITY - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	Nov. 06, 2017	Jul. 25, 2017
Class of Warrant or Right [Line Items]
Issuance of common stock as merger consideration (in shares)	3,423,367
Equity issued in connection with Cantaloupe Acquisition, net of post-working capital adjustment for retired shares	$ 23.3
Public Stock Offering
Class of Warrant or Right [Line Items]
Issuance of common stock in relation to public offering (in shares)		9,583,332
Public offering price (in dollars per share)		$ 4.50
Gross proceeds		$ 43.1
Underwriters' Option
Class of Warrant or Right [Line Items]
Underwriters' purchase option (in shares)		1,249,999