CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities
Net loss before noncontrolling interest	$ (12,186)	$ (10,814)
Adjustments to reconcile net loss to net cash used in operating activities:
Equity-based compensation	1,167	1,257
Depreciation and amortization	133	140
Provision for Italian VAT receivables and deposit	4,200	0
Other	(38)	215
Changes in operating assets and liabilities:
Receivables from license and development services arrangements	0	12,846
Prepaid expenses and other assets	1,038	972
Accounts payable, accrued expenses and other liabilities	(4,756)	(8,072)
Net cash used in operating activities	(10,442)	(3,456)
Investing activities
Proceeds from maturities of short-term investments	2,500	9,000
Net cash provided by investing activities	2,500	9,000
Financing activities
Proceeds from rights offering, net of issuance costs	59,280	0
Principal payments on debt	(1,333)	(1,333)
Cash paid for at-the-market equity offering costs	0	(45)
Net cash provided by (used in) financing activities	57,947	(1,378)
Effect of exchange rate changes on cash and cash equivalents	0	(12)
Net increase in cash and cash equivalents	50,005	4,154
Cash and cash equivalents at beginning of period	31,144	36,439
Cash and cash equivalents at end of period	81,149	40,593
Supplemental disclosure of cash flow information
Cash paid during the period for interest	$ 179	$ 301