Consolidated Statements of Cash Flows - Reconciliation - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation to amounts on consolidated balance sheets:
Cash and cash equivalents	$ 112,637	$ 41,958	$ 56,718
Restricted cash	1,251	1,241	587
Total cash, cash equivalents and restricted cash	113,888	43,199	57,305
NONCASH TRANSACTIONS
Deferred financing costs	988	0	0
Warrants issued with debt financing	993	0	0
Shares issued in connection with in-licensing	100	4,000	0
Reclassification of deferred financing costs to additional paid-in capital	$ 0	$ 0	$ (3)