Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	(Accumulated Deficit)	Other Comprehensive (Loss)
BEGINNING BALANCES (In Shares) at Dec. 31, 2017		125,091,000
BEGINNING BALANCES at Dec. 31, 2017	$ 831,245	$ 550,472	$ 294,741	$ (13,968)
Increase (Decrease) in Stockholders' Equity
Net (loss)	(116,731)		(116,731)
Exercise of stock options (in Shares)		22,000
Exercise of stock options	546	$ 546
Compensation and share issuances related to restricted stock awards (in Shares)		170,000
Compensation and share issuances related to restricted stock awards	5,817	$ 5,817
Stock-based compensation expense - stock options	5,636	$ 5,636
Foreign currency translation gain (loss)	(7,198)			(7,198)
Stock compensation plan withholdings for employee taxes (in Shares)		(25,000)
Stock compensation plan withholdings for employee taxes	(292)	$ (292)
Unrealized holding loss on available-for-sale securities	(5)			(5)
Akorn AG pension liability adjustment	8			8
Employee stock purchase plan expense (in Shares)		146,000
Employee stock purchase plan expense	2,809	$ 2,809
ENDING BALANCES (In Shares) at Jun. 30, 2018		125,404,000
ENDING BALANCES at Jun. 30, 2018	721,835	$ 564,988	178,010	(21,163)
BEGINNING BALANCES (In Shares) at Mar. 31, 2018		125,259,000
BEGINNING BALANCES at Mar. 31, 2018	810,516	$ 559,335	265,994	(14,813)
Increase (Decrease) in Stockholders' Equity
Net (loss)	(87,984)		(87,984)
Compensation and share issuances related to restricted stock awards (in Shares)		170,000
Compensation and share issuances related to restricted stock awards	3,468	$ 3,468
Stock-based compensation expense - stock options	2,477	$ 2,477
Foreign currency translation gain (loss)	(6,350)			(6,350)
Stock compensation plan withholdings for employee taxes (in Shares)		(25,000)
Stock compensation plan withholdings for employee taxes	(292)	$ (292)
Unrealized holding loss on available-for-sale securities	(4)			(4)
Akorn AG pension liability adjustment	4			4
Employee stock purchase plan expense (in Shares)		0
Employee stock purchase plan expense	0	$ 0
ENDING BALANCES (In Shares) at Jun. 30, 2018		125,404,000
ENDING BALANCES at Jun. 30, 2018	$ 721,835	$ 564,988	178,010	(21,163)
BEGINNING BALANCES (In Shares) at Dec. 31, 2018	125,492,373	125,492,000
BEGINNING BALANCES at Dec. 31, 2018	$ 443,866	$ 574,553	(107,168)	(23,519)
Increase (Decrease) in Stockholders' Equity
Net (loss)	$ (193,780)		(193,780)
Exercise of stock options (in Shares)	0
Compensation and share issuances related to restricted stock awards (in Shares)		704,000
Compensation and share issuances related to restricted stock awards	$ 6,989	$ 6,989
Stock-based compensation expense - stock options	2,821	$ 2,821
Foreign currency translation gain (loss)	956			956
Stock compensation plan withholdings for employee taxes (in Shares)		(88,000)
Stock compensation plan withholdings for employee taxes	(269)	$ (269)
Unrealized holding loss on available-for-sale securities	(3)			(3)
Akorn AG pension liability adjustment	74			74
Employee stock purchase plan expense (in Shares)		0
Employee stock purchase plan expense	$ 498	$ 498
ENDING BALANCES (In Shares) at Jun. 30, 2019	126,107,933	126,108,000
ENDING BALANCES at Jun. 30, 2019	$ 261,152	$ 584,592	(300,948)	(22,492)
BEGINNING BALANCES (In Shares) at Mar. 31, 2019		125,579,000
BEGINNING BALANCES at Mar. 31, 2019	365,749	$ 579,157	(189,349)	(24,059)
Increase (Decrease) in Stockholders' Equity
Net (loss)	(111,599)		(111,599)
Compensation and share issuances related to restricted stock awards (in Shares)		583,000
Compensation and share issuances related to restricted stock awards	3,879	$ 3,879
Stock-based compensation expense - stock options	1,440	$ 1,440
Foreign currency translation gain (loss)	1,380			1,380
Stock compensation plan withholdings for employee taxes (in Shares)		(54,000)
Stock compensation plan withholdings for employee taxes	(153)	$ (153)
Unrealized holding loss on available-for-sale securities	(3)			(3)
Akorn AG pension liability adjustment	190			190
Employee stock purchase plan expense (in Shares)		0
Employee stock purchase plan expense	$ 269	$ 269
ENDING BALANCES (In Shares) at Jun. 30, 2019	126,107,933	126,108,000
ENDING BALANCES at Jun. 30, 2019	$ 261,152	$ 584,592	$ (300,948)	$ (22,492)

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