NET INCOME PER SHARE Earnings Per Share (Details) - shares shares in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Antidilutive Securities Excluded from Computation of Net Loss Per Share [Line Items]
Anti-dilutive potential common shares (in thousands of shares)	930	3,610
Options
Antidilutive Securities Excluded from Computation of Net Loss Per Share [Line Items]
Anti-dilutive potential common shares (in thousands of shares)	0	390
Non-vested restricted stock units
Antidilutive Securities Excluded from Computation of Net Loss Per Share [Line Items]
Anti-dilutive potential common shares (in thousands of shares)	930	3,220