The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount classified as goodwill attributable to disposal group held for sale or disposed of, expected to be disposed of after one year or the normal operating cycle, if longer.

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GOODWILL AND INTANGIBLE ASSETS - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Aug. 27, 2015	Mar. 31, 2014
Goodwill [Line Items]
Impairment of goodwill	$ 251,850	$ 251,850	$ 0	$ 0
Depreciation and amortization expense		$ 5,100	6,600	$ 6,700
PBM Services
Goodwill [Line Items]
Goodwill included in non-current assets of discontinued operations			$ 12,700		$ 12,744
Home Health Services
Goodwill [Line Items]
Goodwill included in non-current assets of discontinued operations						$ 33,784
Goodwill \| Minimum
Goodwill [Line Items]
Growth rate		3.00%
EBITDA margin		0.06
Discount rate		9.00%
Goodwill \| Maximum
Goodwill [Line Items]
Growth rate		5.00%
EBITDA margin		0.08
Discount rate		11.00%