CONVERTIBLE NOTES (Additional Information) (Details)				1 Months Ended	12 Months Ended
	Aug. 25, 2021 USD ($) $ / shares shares	Dec. 07, 2016 USD ($) shares	Dec. 01, 2016 USD ($)	Jul. 24, 2017 USD ($)	Dec. 31, 2021 USD ($) D shares
Net payment for convertible notes					$ 30,036,000
Net proceeds from issuance of convertible notes				$ 9,500,000
Loss on extinguishment of convertible notes					(831,000)
Reacquisition of equity component of convertible notes					12,019,000
Equity component of convertible notes, net of transaction costs					$ 12,027,000
Converted instrument, shares issued | shares		2,384,673
2021 Notes
Face amount			$ 22,500,000	$ 10,000,000.0
Debt Instrument Carrying Amount	$ 54,650,000
Net proceeds from issuance of convertible notes			$ 19,700,000
Interest rate	7.50%		7.50%		7.50%
Loss on extinguishment of convertible notes					$ (831,000)
Reacquisition of equity component of convertible notes					12,200,000
Aggregate principal amount					$ 0
2024 Notes
Face amount	$ 28,750,000
Net payment for convertible notes	25,900,000
Convertible notes exchange in cash, accrued and unpaid interest	1,100,000
Base value for conversion rate	$ 1,000
Number of shares for basis conversion | shares	563.2216
Conversion price per share | $ / shares	$ 1.7755
Percentage of Premium to Closing Price of Stock	32.50%
Interest rate	7.50%				7.50%
Mature term					3 years
Reacquisition of equity component of convertible notes					$ 12,000,000.0
Transactions costs in connection with the exchange of convertible notes					869,000
Minimum cash balance required					$ 7,500,000
Maximum price per share of the conversion feature | shares					746.2686
Aggregate principal amount					$ 28,750,000
Redemption, description					Prior to the maturity date, the Company may redeem in cash
Threshold trading days | D					20
Threshold consecutive trading days | D					30
Threshold Percentage Of Conversion Price					130.00%
Aggregate percentage of principle amount					15.00%
Amount of redemption of debt					$ 0
Percentage of outstanding capital stock					100.00%
Denomination of the principal amount of debt					$ 1,000
Redemption price, percentage					100.00%
2024 Notes | Minimum
Number of calendar days after the date of applicable fundamental change purchase date | D					20
2024 Notes | Maximum
Number of calendar days after the date of applicable fundamental change purchase date | D					35
4.5% Convertible Notes [Member]
Debt Instrument Carrying Amount			$ 54,100,000
Convertible Notes Due Two Thousand Twenty One [Member]
Face amount		$ 40,186,000