Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 112,158	$ 32,778
Short-term investments	531	51,106
Other receivables	3,673	5,561
Prepaid expenses	1,510	1,176
Total current assets	117,872	90,621
Property, plant and equipment, net	1,405	519
Intangible assets, net	199	270
Long-term receivables	420	420
Deferred tax assets		1,410
Total assets	119,896	93,240
Current liabilities:
Accounts payable	5,319	2,551
Accrued expense and other current liabilities	11,014	13,326
Total current liabilities	16,333	15,877
Non-current liabilities
Long-term debt	227
Other non-current liabilities	198	107
Total non-current liabilities	425	107
Total liabilities	16,758	15,984
Commitments and contingencies (Note 9)
Stockholders' Equity:
Common shares, no par value, 2,719,695 common shares issued and outstanding at December 31, 2016		2,939
Ordinary shares, nominal value $0.01, 1,000,000,000 ordinary shares authorized at September 30, 2017; 36,691,490 issued and outstanding at September 30, 2017	367
Preferred shares, par value $0.01, 100,000,000 shares authorized at September 30, 2017; None issued and outstanding at September 30, 2017
Additional paid in capital	359,680	279,149
Accumulated other comprehensive income	27	10
Accumulated deficit	(256,936)	(204,842)
Total stockholders' equity	103,138	77,256
Total liabilities and stockholders' equity	$ 119,896	$ 93,240