DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Offerings (Details) $ in Thousands	1 Months Ended						12 Months Ended
	Jul. 31, 2017 USD ($)	Apr. 30, 2017 USD ($)	Nov. 30, 2016 USD ($)	Sep. 30, 2016 USD ($)	Aug. 31, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jan. 31, 2018 USD ($) subsidiary	Jan. 31, 2017 USD ($)
Other Disclosures
Number of wholly owned subsidiaries | subsidiary							1
Net proceeds from issuance of common stock, preferred stock and warrants							$ 16,049	$ 16,712
Allowance for Doubtful Accounts Receivable							0	0
Unrecognized Tax Benefits, Interest on Income Taxes Expense							$ 0	$ 0
Private Placement
Other Disclosures
Net proceeds from the sale of common stock	$ 1,900	$ 4,400		$ 800	$ 1,300
Public Offering
Other Disclosures
Net proceeds from issuance of common stock, preferred stock and warrants			$ 10,600
Net proceeds from the sale of common stock						$ 7,800