STOCKHOLDERS' EQUITY - Inputs valued under using the Black-Scholes pricing model (Details)	12 Months Ended
	Dec. 31, 2023 Y $ / shares shares	Dec. 31, 2022 Y $ / shares	Dec. 31, 2021 $ / shares
Fair Value Measurement Inputs and Valuation Techniques
Exercise price of options granted	$ 19.80	$ 14.59
Expected life (years)
Fair Value Measurement Inputs and Valuation Techniques
Measurement input | Y	6.5	6.5
Risk-free interest rate
Fair Value Measurement Inputs and Valuation Techniques
Measurement input	3.6	2.5
Expected volatility
Fair Value Measurement Inputs and Valuation Techniques
Measurement input	45.7	45.7
Annual dividend yield
Fair Value Measurement Inputs and Valuation Techniques
Measurement input	0	0
2015 Equity Incentive Plan
Fair Value Measurement Inputs and Valuation Techniques
Maximum number of shares authorized to issue | shares	11,590,000
Expire term	10 years
Exercise price of options granted		$ 4.33	$ 25.00
Vesting term	4 years