CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 5,849	$ 5,445
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Deferred tax provision	0	3,362
Changes in operating assets and liabilities:
Increase in milestone receivable	(7,000)	0
Decrease in other current assets	24	176
Increase in refundable tax credit receivable	0	(1,940)
Increase (decrease) in accounts payable	214	(545)
Decrease in accrued expenses and other current liabilities	(65)	(27)
Net cash (used in) provided by operating activities	(978)	6,471
Cash flows from financing activities:
Common stock dividends	0	(6,632)
Net cash used in financing activities	0	(6,632)
Net decrease in cash	(978)	(161)
Cash at beginning of year	7,478	7,639
Cash at end of year	6,500	7,478
Supplemental cash flows disclosure:
Cash paid for income taxes	$ 0	$ 0