Condensed Consolidated Statement of Shareholders' Equity - 3 months ended Mar. 31, 2017 - USD ($) $ in Thousands	Total	Common Stock	Retained Earnings	Other Comprehensive Loss
BALANCES AT at Dec. 31, 2016	$ 819,184	$ 521,860	$ 319,291	$ (21,967)
BALANCES AT (in Shares) at Dec. 31, 2016	124,390,217	124,390,000
Increase (Decrease) in Stockholders' Equity
Consolidated net income	$ 41,027		41,027
Exercise of stock options	1,115	$ 1,115
Exercise of stock options (in Shares)		82,000
Restricted stock units	1,133	$ 1,133
Stock-based compensation expense	3,314	3,314
Foreign currency translation gain	4,026			4,026
Unrealized holding gain on available-for-sale securities	128			128
Akorn AG pension liability adjustment	223			223
Employee stock purchase plan	262	262
BALANCES AT at Mar. 31, 2017	$ 870,412	$ 527,684	$ 360,318	$ (17,590)
BALANCES AT (in Shares) at Mar. 31, 2017	124,472,468	124,472,000