Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 66,417	$ 63,842
Accounts and other receivable	331	541
Prepaid expenses	9,547	8,762
Other current assets	1,523	1,399
Research and development tax credit receivable	9,856	5,084
Total current assets	87,674	79,628
Property and equipment, net	725	518
Right-of-use assets	554	1,021
Goodwill	2,030	1,961
Intangible assets, net	11,515	13,120
Total assets	102,498	96,248
Current liabilities:
Accounts payable	6,140	4,471
Accrued liabilities	4,261	5,739
Other current liabilities	729	366
Lease liabilities	390	471
Deferred revenue and income	8,370	2,615
Contingent consideration	0	105
Total current liabilities	19,890	13,767
Non-current liabilities
Deferred revenue and income	569	493
Lease liabilities	75	422
Other non-current liabilities	2,511	2,703
Total liabilities	23,045	17,385
Commitments and contingencies (Note 21)
Stockholders' equity:
Common stock, $0.01 par value: 250,000,000 shares authorized; 82,575,064 and 67,178,054 shares issued and outstanding at December 31, 2020 and December 31, 2019, respectively	826	672
Additional paid-in capital	293,367	241,204
Accumulated other comprehensive loss	(3,794)	(4,764)
Accumulated deficit	(210,946)	(158,249)
Total stockholders' equity	79,453	78,863
Total liabilities and stockholders' equity	$ 102,498	$ 96,248