REVENUE RECOGNITION (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
REVENUE RECOGNITION
Net revenues	$ 236,419	$ 233,995
Patient Care
REVENUE RECOGNITION
Net revenues	190,601	188,507
Patient Care | Medicare
REVENUE RECOGNITION
Net revenues	57,776	57,531
Patient Care | Medicaid
REVENUE RECOGNITION
Net revenues	30,147	29,711
Patient Care | Commercial Insurance/ Managed Care (excluding Medicare and Medicaid Managed Care)
REVENUE RECOGNITION
Net revenues	70,218	70,582
Patient Care | Veterans Administration
REVENUE RECOGNITION
Net revenues	18,322	16,731
Patient Care | Private Pay
REVENUE RECOGNITION
Net revenues	14,138	13,952
Patient Care | Operating segments
REVENUE RECOGNITION
Net revenues	190,601	188,507
Products & Services
REVENUE RECOGNITION
Net revenues	90,697	88,010
Products & Services | Operating segments
REVENUE RECOGNITION
Net revenues	45,818	45,488
Products & Services | Operating segments | Distribution services, net of intersegment revenue eliminations
REVENUE RECOGNITION
Net revenues	33,195	31,351
Products & Services | Operating segments | Therapeutic solutions
REVENUE RECOGNITION
Net revenues	$ 12,623	$ 14,137