Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 58,115	$ 77,833
Prepaid expenses and other current assets	2,878	3,176
Total current assets	60,993	81,009
Property and equipment, net	8,478	8,341
Right of use asset - operating lease	12,106
Other assets	1,570	1,570
Total assets	83,147	90,920
Current liabilities:
Accounts payable	1,210	620
Accrued expenses	9,039	8,758
Operating lease liability, current portion	1,806
Other current liabilities	408	365
Total current liabilities	12,463	9,743
Noncurrent liabilities:
Long-term debt	19,720	19,634
Operating lease liability, net of current portion	11,451
Deferred rent, net of current portion		1,148
Other noncurrent liabilities	169	198
Total liabilities	43,803	30,723
Commitments and contingencies
Stockholder’s equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized; no shares issued or outstanding at March 31, 2020 and December 31, 2019, respectively	0	0
Common stock, $0.001 par value; 200,000,000 shares authorized; 32,369,471 and 32,232,258 shares issued and 32,321,208 and 32,170,605 shares outstanding at March 31, 2020 and December 31, 2019, respectively	32	32
Additional paid-in capital	261,206	259,018
Accumulated deficit	(221,894)	(198,853)
Total stockholders’ equity	39,344	60,197
Total liabilities and stockholders’ equity	$ 83,147	$ 90,920