Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 21,270	$ 63,842
Accounts receivable	4,080	541
Prepaid expenses	7,141	8,762
Other current assets	1,667	1,399
Research and development tax credit receivables	7,919	5,084
Total current assets	42,077	79,628
Property, plant and equipment	724	518
Right-of-use assets	628	1,021
Goodwill	2,335	2,392
Intangible assets	11,101	13,120
Total assets	56,865	96,679
Current liabilities
Accounts payable	2,493	4,471
Accrued expenses	4,398	5,739
Other current liabilities	354	366
Lease liabilities	386	471
Deferred income	7,111	2,615
Contingent consideration	0	105
Total current liabilities	14,742	13,767
Non-current liabilities
Deferred income	715	493
Lease liabilities	162	422
Other non-current liabilities	2,277	2,703
Deferred tax liability	2,108	2,057
Total liabilities	20,004	19,442
Commitments and contingencies
Stockholders'equity
Common stock, $0.01 par value: 250,000,000 shares authorized; 67,231,903 and 67,178,054 shares issued and outstanding at September 30, 2020 and December 31, 2019, respectively	672	672
Additional paid-in capital	242,395	241,204
Accumulated other comprehensive loss	(7,032)	(4,720)
Accumulated deficit	(199,174)	(159,919)
Total stockholders' equity	36,861	77,237
Total liabilities and stockholders' equity	$ 56,865	$ 96,679