COMPUTATION OF NET INCOME PER COMMON SHARE - NARRATIVE (Details) shares in Thousands		12 Months Ended
	Oct. 01, 2019 shares	Dec. 31, 2019 shares
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Spin-Off transaction, distribution ratio	0.50
Common stock
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Shares issued (in shares)	27,834	27,834
Ensign Group Shareholders | Common stock
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Shares issued (in shares)	26,674
Noncontrolling Interest Holders | Common stock
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Shares issued (in shares)	1,160