Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Assets
Cash and cash equivalents	$ 395,504	$ 504,389
Restricted cash	3,354	3,345
Investments	47,964	3,212
Trade receivables	36,415	29,413
Inventory	16,144	15,791
Prepaid expenses and other current assets	12,333	9,986
Total current assets	511,714	566,136
Property and equipment, net	8,799	8,714
Long-term investments	0	6,829
Other assets	7,207	6,472
Total assets	527,720	588,151
Liabilities and Stockholders’ Deficit
Accounts payable	13,881	27,808
Accrued expenses	63,584	72,670
Deferred revenue	1,471	1,421
Lease financing obligation	2,081	1,819
Total current liabilities	81,017	103,718
Non-current operating lease liabilities	6,457	5,962
Royalty financing obligations	464,225	449,375
Secured term loan	140,236	136,082
Stockholders’ equity:
Preferred stock, $0.01 par value; shares authorized - 5,000; no shares issued and outstanding	0	0
Common stock, $0.01 par value; shares authorized - 450,000; shares issued and outstanding – 185,572 as of March 31, 2022 and 184,350 as of December 31, 2021	1,856	1,843
Additional paid-in capital	1,115,443	1,098,498
Accumulated other comprehensive income	186	177
Accumulated deficit	(1,281,700)	(1,207,504)
Total stockholders’ deficit	(164,215)	(106,986)
Total liabilities and stockholders’ deficit	$ 527,720	$ 588,151

Carrying amount as of the balance sheet date of obligations for future royalties.

No definition available.

Name:	bcrx_FutureRoyaltiesPayable
Namespace Prefix:	bcrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).