Quantum Corporation Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

COMMON STOCK - Narrative (Details)

COMMON STOCK - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		6 Months Ended		9 Months Ended		12 Months Ended
	Apr. 22, 2022	Feb. 01, 2021	Jun. 30, 2023	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Dec. 30, 2022	Dec. 29, 2022	Apr. 02, 2022	Mar. 31, 2021	Jun. 30, 2020	Jun. 16, 2020
Share-based compensation expense:
Common stock, shares authorized (in shares)			225,000,000	225,000,000		225,000,000	225,000,000	225,000,000		225,000,000	225,000,000			125,000,000
Repayments of secured debt			$ 1,997	$ 20,846	$ 3,247	$ 22,096	$ 4,497	$ 23,346	$ 5,747	$ 24,596	$ 94,301
Total shares reserved for future issuance (in shares)									800,000
Senior Secured Term Loan
Share-based compensation expense:
Minimum registrable securities to request a S-1																	40.00%
June 2020 Warrants
Share-based compensation expense:
Warrant exercise price (in dollars per share)									$ 2.77	$ 2.79	$ 3.00
June 2020 Warrants \| Down Round Feature
Share-based compensation expense:
Class of warrant or right, additional warrants issued (in shares)	256,111
Warrant exercise price (in dollars per share)	$ 2.79
June 2020 Warrants \| Warrant Repricing Feature
Share-based compensation expense:
Class of warrant or right, additional warrants issued (in shares)	27,269
Warrant exercise price (in dollars per share)	$ 2.77
June 2020 Warrants \| Advisor
Share-based compensation expense:
Class of warrant or right, additional warrants issued (in shares)																50,000
Warrant exercise price (in dollars per share)																$ 3.00
December 2018 Warrants
Share-based compensation expense:
Class of warrant or right, additional warrants issued (in shares)	20,417
Warrant exercise price (in dollars per share)	$ 1.33								1.33	$ 1.33	$ 1.33
June 2023 Warrants
Share-based compensation expense:
Warrant exercise price (in dollars per share)									$ 1.00
June 2023 Warrants \| Advisor
Share-based compensation expense:
Class of warrant or right, additional warrants issued (in shares)			50,000
Warrant exercise price (in dollars per share)			$ 1.00
Restricted stock units
Share-based compensation expense:
Vesting period									3 years
Unrecognized compensation cost related to stock options granted									$ 2,600
Weighted-average period for recognition (in years)									2 years
Awards vested, fair value									$ 6,400	$ 5,200	$ 5,000
Shares granted (in shares)									1,200,000	2,900,000	2,800,000
Employee stock purchase plan
Share-based compensation expense:
Shares available for future equity grants (in shares)									88,000	88,000	688,000				1,077,000
Common stock purchase price, percentage									85.00%
Market (PSUs)
Share-based compensation expense:
Unrecognized compensation cost related to stock options granted									$ 600
Weighted-average period for recognition (in years)									1 year
Shares granted (in shares)									100,000	400,000	600,000
Market (PSUs) \| Minimum
Share-based compensation expense:
Vesting period									1 year
Market (PSUs) \| Maximum
Share-based compensation expense:
Vesting period									3 years
Performance PSUs
Share-based compensation expense:
Weighted-average period for recognition (in years)									1 year
Shares granted (in shares)									900,000	900,000	0
Performance share units
Share-based compensation expense:
Awards vested, fair value									$ 1,000	$ 1,900	$ 3,900
2012 Long-Term Incentive Plan
Share-based compensation expense:
Shares authorized (in shares)									7,400,000
Shares available for future equity grants (in shares)									6,700,000
Plan term									7 years
2012 Long-Term Incentive Plan \| Nonemployee director
Share-based compensation expense:
Vesting period									1 year
2012 Long-Term Incentive Plan \| Minimum \| Employee
Share-based compensation expense:
Vesting period									1 year
2012 Long-Term Incentive Plan \| Maximum \| Employee
Share-based compensation expense:
Vesting period									3 years
2012 Long-Term Incentive Plan \| Stock options, PSUs, and Restricted Shares
Share-based compensation expense:
Shares outstanding (in shares)									1,600,000
2021 Inducement Plan
Share-based compensation expense:
Common stock, shares authorized (in shares)												1,500,000	770,000
2021 Inducement Plan \| Stock options
Share-based compensation expense:
Plan term		7 years
2021 Inducement Plan \| Stock options \| Minimum
Share-based compensation expense:
Vesting period		2 years
2021 Inducement Plan \| Stock options \| Maximum
Share-based compensation expense:
Vesting period		3 years
2021 Inducement Plan \| Restricted stock units
Share-based compensation expense:
Plan term		7 years
2021 Inducement Plan \| Restricted stock units \| Minimum
Share-based compensation expense:
Vesting period		2 years
2021 Inducement Plan \| Restricted stock units \| Maximum
Share-based compensation expense:
Vesting period		3 years
Rights Offering
Share-based compensation expense:
Number of shares issued in transaction (in shares)	30,000,000
Sale of stock, price per share (in dollars per share)	$ 2.25
Maximum available amount	$ 66,200
Repayments of secured debt	$ 20,000