INCOME TAXES (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Tax Contingency [Line Items]
Effective income tax rate	51.10%	45.60%	50.30%	44.00%
Effective income tax rate increase (decrease) during period	1.60%		2.30%
Effective income tax rate increase (decrease), excess tax benefit due to new guidance			(1.70%)
Concentra Inc.
Income Tax Contingency [Line Items]
Effective income tax rate increase (decrease) during period		(6.50%)		(6.50%)