Accounts Payable, Accrued Liabilities and Long-Term Liabilities

6 Months Ended

Jun. 30, 2020

Payables and Accruals [Abstract]

Accounts Payable, Accrued Liabilities and Long-Term Liabilities

Accounts Payable, Accrued Liabilities and Long-Term Liabilities

Accounts payable and accrued liabilities consisted of the following (in thousands):

	June 30,		December 31,
	2020		2019
Accounts payable	$	24,099	$	16,367
Accrued clinical expense	22,920		21,290
Accrued development and other expense	4,743		2,510
Accrued compensation and benefits	5,081		7,915
	$	56,843	$	48,082

The long-term liabilities balance of $1.3 million as of June 30, 2020, and $1.0 million as of December 31, 2019, consisted primarily of clinical trial-related liabilities.