Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 24,946	$ 22,121
Short-term investments	87,102	72,192
Prepaid expenses and other current assets	2,697	3,551
Total current assets	114,745	97,864
Property and equipment, net	605	925
In-process R&D	11,520	33,626
Goodwill	26,962	27,082
Other non-current assets	1,292	131
Total assets	155,124	159,628
Current liabilities:
Accounts payable	3,240	2,784
Accrued expenses	3,912	2,966
Debt facility	3,750
Current portion of capital lease obligation	318	265
Total current liabilities	11,220	6,015
Long-term liabilities:
Debt facility, net of current portion	11,357	14,775
Contingent consideration	12,079	11,948
Deferred tax liability	2,534	7,181
Capital lease obligation, net of current portion		297
Other long-term liabilities	80	103
Total liabilities	37,270	40,319
Stockholders’ equity:
Common stock, $0.001 par value, 200,000,000 and 500,000,000 shares authorized as of September 30, 2018 and December 31, 2017, respectively; 35,120,540 and 30,509,522 shares issued and outstanding as of September 30, 2018 and December 31, 2017, respectively	36	32
Additional paid-in capital	236,659	186,522
Accumulated other comprehensive income	364	958
Accumulated deficit	(119,205)	(68,203)
Total stockholders’ equity	117,854	119,309
Total liabilities and stockholders' equity	$ 155,124	$ 159,628