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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Note 6 - Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Jan. 02, 2019	Dec. 31, 2018
Goodwill	$ 408,013		$ 408,013			$ 261,095
Amortization of Intangible Assets	4,726	$ 510	9,456	$ 1,023
Amortization expense related to intangible assets, 2019	18,919		18,919
Amortization expense related to intangible assets, 2020	18,903		18,903
Amortization expense related to intangible assets, 2021	18,897		18,897
Amortization expense related to intangible assets, 2022	18,458		18,458
Amortization expense related to intangible assets, 2023	17,844		17,844
Avista Pharma Solutions [Member]
Goodwill					$ 148,481
Amortization of Intangible Assets	1,216		2,433
Halo Pharma [Member]
Amortization of Intangible Assets	2,994		5,990
Customer-related Intangibles [Member] \| Avista Pharma Solutions [Member]
Intangible assets (Customer relationships)					$ 73,000
DP [Member]
Goodwill	217,301		217,301
ESDT [Member]
Goodwill	$ 157,527		$ 157,527