CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash Flows from Operating Activities:
Net loss	$ (595)	$ (788)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation	15	17
Non-cash share-based compensation	9	29
Capitalized debt discount		(9)
Amortization of debt discount and deferred debt issue costs		32
Impairment charge on intangible asset	668
Amortization of intangible asset	51	51
Changes in assets and liabilities:
Royalty receivable	52	81
Collaboration revenue receivable from related party	73
Prepaid expenses and other current assets	47	68
Accounts payable	(129)	35
Accrued expenses	46
Accrued interest on related party loans	112	80
Other current liabilities	(2)	5
Net cash provided by (used in) operating activities	347	(399)
Cash Flows from Financing Activities:
Proceeds from distribution of restricted stock units	3	3
Statutory minimum payroll withholding taxes paid on the distribution of shares pursuant to RSU award plan	(2)
Amount borrowed from related party		400
Net cash provided by financing activities	1	403
Net increase in cash	348	4
Cash at beginning of period	862	91
Cash at end of end of period	$ 1,210	$ 95