CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
CURRENT ASSETS:
Cash and cash equivalents	$ 57,601	$ 43,759
Restricted cash	855	825
Short term bank deposits		12,102
Investment in marketable securities (Note 6)	23,790	16,246
Restricted investment in marketable securities (Note 6)	421	434
Trade receivable	8,333	135
Prepaid and other assets	4,236	1,557
Inventory (Note 7)	3,205	1,356
TOTAL CURRENT ASSETS	98,441	76,414
NON-CURRENT ASSETS:
Property and equipment, net	2,834	2,885
Operating lease right-of-use assets (Note 10)	1,721	1,694
In-process research & development (Note 3)	50,300
Goodwill (Note 3)	4,045
Prepaid and other assets	3,192	166
TOTAL NON-CURRENT ASSETS	62,092	4,745
TOTAL ASSETS	160,533	81,159
CURRENT LIABILITIES:
Trade payables	14,114	19,352
Accrued expenses	12,452	3,381
Employee related obligations	7,803	5,231
Operating lease liabilities (Note 10)	1,009	1,092
Derivative liabilities	1,190
Contingent Stock Right (Note 3)	19,636
Other	382	270
TOTAL CURRENT LIABILITIES	56,586	29,326
LONG-TERM LIABILITIES:
Liability for employee severance benefits	411	424
Operating lease liabilities (Note 10)	727	653
Long-term debt (Note 8)	32,818	32,725
Other liabilities	456	456
TOTAL LONG-TERM LIABILITIES	34,412	34,258
TOTAL LIABILITIES	90,998	63,584
COMMITMENTS (Note 11)
STOCKHOLDERS' EQUITY:
Common stock: $0.0001 par value; 300,000,000 shares authorized at March 31, 2020 and December 31, 2019, respectively; 61,501,130 and 36,480,314 shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively	6	3
Additional paid-in capital	420,430	328,154
Accumulated deficit	(350,861)	(310,587)
Accumulated other comprehensive income (loss)	(40)	5
TOTAL SHAREHOLDERS' EQUITY	69,535	17,575
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 160,533	$ 81,159