CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 46,035	$ 20,202
Marketable securities	118,569	173,655
Accounts receivable, net	2,182	481
Inventory	1,026
Prepaid expenses and other current assets	3,360	5,883
Total current assets	171,172	200,221
Marketable securities		14,997
Property and equipment, net	4,375	2,159
Intangible assets	7,311	7,349
Goodwill	18,504	18,504
Other assets	457	279
Total assets	201,819	243,509
Current liabilities:
Accounts payable	12,504	7,822
Accrued expenses	7,565	4,940
Total current liabilities	20,069	12,762
Contingent consideration	5,244	4,378
Other liabilities	1,754	558
Deferred tax liability	549	549
Total liabilities	27,616	18,247
Stockholders' Equity:
Preferred stock, $0.0001 par value; 10,000,000 shares authorized and no shares issued or outstanding at June 30, 2018 and December 31, 2017
Common stock, $0.00001 par value; 100,000,000 shares authorized at June 30, 2018 and December 31, 2017; 30,965,296 and 30,856,505 shares issued and outstanding at June 30, 2018 and December 31, 2017, respectively
Additional paid-in capital	395,273	384,943
Accumulated other comprehensive loss	(188)	(246)
Accumulated deficit	(220,882)	(159,435)
Total stockholders’ equity	174,203	225,262
Total liabilities and stockholders’ equity	$ 201,819	$ 243,509