Accounts Payable and Accrued Liabilities

12 Months Ended

Dec. 31, 2018

Payables and Accruals [Abstract]

Accounts Payable and Accrued Liabilities

4. Accounts payable and accrued liabilities:

The following table represents the components of accounts payable and accrued liabilities as of December 31:

	2018		2017
Accounts payable	$	3,166	$	12,236
Accrued rebates		12,261		5,648
Accrued compensation and benefits		3,814		3,472
Accrued acquisition costs		318		2,311
Accrued returns		715		915
Accrued royalties		159		488
Accrued clinical trial costs		464		234
Accrued legal		70		216
Accrued other		572		629
Total accounts payable and accrued expenses	$	21,539	$	26,149

As of December 31, 2018, three vendors comprised 37% of the accounts payable balance. As of December 31, 2017, three vendors comprised 39% of the accounts payable balance.