Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 26,416	$ 31,799
Accounts receivable	1,072	1,204
Prepaid expenses and other current assets	2,370	1,790
Total current assets	88,333	93,828
Property and equipment, net of accumulated depreciation of $6,142 (December 31, 2019: $5,642)	8,176	8,676
Investments in marketable securities, non-current	3,215	0
Right of use asset	2,657	2,738
Other non-current assets	233	293
Total assets	102,614	105,535
Current liabilities:
Accounts payable and accrued liabilities	3,565	7,235
Liability-classified options	58	253
Lease liability, current	408	340
Total current liabilities	4,031	7,828
Liability related to sale of future royalties	19,375	18,992
Contingent consideration	3,065	2,953
Lease liability, non-current	2,887	3,018
Total liabilities	29,358	32,791
Stockholders’ equity:
Preferred shares, Authorized - 1,164,000 with no par value, Issued and outstanding: 1,164,000 (December 31, 2018 - 1,164,000)	140,263	137,285
Common shares, Authorized - unlimited number with no par value, Issued and outstanding: 56,850,172 (December 31, 2018 - 55,518,800)	911,099	898,535
Additional paid-in capital	56,803	55,246
Deficit	(986,932)	(970,093)
Accumulated other comprehensive loss	(47,977)	(48,229)
Total stockholders’ equity	73,256	72,744
Total liabilities and stockholders’ equity	102,614	105,535
Marketable Securities [Member]
Current assets:
Investments in marketable securities, current	$ 61,690	$ 59,035