Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current Assets
Cash and cash equivalents	$ 22,106	$ 21,061
Short-term investments	0	51,790
Accounts receivable, net	2,352	8,560
Inventories	13,657	10,941
Interest receivable	22	26
Other current assets	8,762	9,205
Total Current Assets	46,899	101,583
Restricted cash	698	590
Inventories, net of current portion	9,336	0
Property and equipment, net	5,428	6,337
Goodwill	0	80,131
Other long term assets	2,584	203
Total Assets	97,634	239,307
Current Liabilities
Accounts payable	3,403	4,433
Accrued expenses	8,094	9,619
Deferred revenue – current portion	884	1,733
Contingent consideration – current portion	71	72
Deferred consideration - MST Acquisition	0	5,962
Total Current Liabilities	12,452	21,819
Long Term Liabilities
Deferred revenue – less current portion	46	109
Contingent consideration – less current portion	877	10,565
Notes payable – net of debt discount	15,343	28,937
Warrant liabilities	1,600	4,636
Net deferred tax liabilities	1,960	4,720
Other long term liabilities	1,590	0
Total Liabilities	33,868	70,786
Commitments and Contingencies (Note 17)
Stockholders’ Equity
Common stock $0.001 par value, 750,000,000 shares authorized at September 30, 2019 and December 31, 2018; 255,652,460 and 216,345,984 shares issued and outstanding at September 30, 2019 and December 31, 2018, respectively	255	216
Additional paid-in capital	716,420	676,373
Accumulated deficit	(649,868)	(509,406)
Accumulated other comprehensive (loss) income	(3,041)	1,338
Total Stockholders’ Equity	63,766	168,521
Total Liabilities and Stockholders’ Equity	97,634	239,307
Intellectual Property, Net
Current Assets
Intangible assets	30,289	39,716
In-Process Research and Development
Current Assets
Intangible assets	$ 2,400	$ 10,747