Current Liabilities (Tables)

3 Months Ended

Mar. 31, 2019

Payables and Accruals [Abstract]

Schedule of accrued expenses

Accrued expenses consisted of the following as of March 31, 2019 and December 31, 2018 (in thousands):

	March 31, 2019		December 31, 2018
Commercial rebates, fees and returns	$	104,521	$	80,520
Professional, license, and other fees and expenses	24,210		23,242
Salaries, bonuses, and other compensation	13,797		22,482
Interest expense	3,467		1,067
Research and development expense	4,634		2,226
Restructuring expense	5,058		—
Total accrued expenses	$	155,687	$	129,537