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Income Taxes (Tables)
 12 Months Ended
Dec. 31, 2023
Income Tax Disclosure [Abstract]  
Summary of components of (loss) income before income taxes
The components of loss before income taxes are summarized as follows: 
 Year Ended December 31,
(In thousands)202320222021
U.S.$(2,381)$(15,912)$(7,367)
Foreign13 (76)(104)
Loss before income taxes$(2,368)$(15,988)$(7,471)
Schedule of reconciliation of income taxes computed using the federal statutory rate to the taxes reported in consolidated statements of operations
A reconciliation of income taxes computed using the U.S. federal statutory rate to the taxes reported in the consolidated statements of operations is as follows: 
 Year Ended December 31,
(In thousands)202320222021
Loss before income taxes$(2,368)$(15,988)$(7,471)
Federal statutory rate21 %21 %21 %
Taxes computed at federal statutory rate(497)(3,357)(1,569)
State and local income taxes(389)(630)(345)
Nondeductible stock-based compensation(586)1,168 (4,311)
Federal and state rate change(704)574 47 
Research and orphan drug credits362 (644)(413)
Other162 267 (87)
Change in valuation allowance2,466 3,343 6,567 
Reported income taxes$814 $721 $(111)
Schedule of deferred tax assets and liabilities
Deferred tax assets (liabilities) consist of the following:
 Year Ended December 31,
(In thousands)20232022
Deferred tax assets:
Net operating loss carryforwards$4,505 $7,020 
Employee benefits and stock-based compensation24,812 18,028 
Research and development costs5,176 7,530 
Intangible assets962 1,770 
Operating lease liabilities20,849 11,846 
Inventory reserve3,570 2,780 
Tax credit carryforward10,781 11,143 
Other, net12 12 
Total deferred tax assets70,667 60,129 
Less: valuation allowance(49,755)(47,290)
Total net deferred tax assets20,912 12,839 
Deferred tax liabilities:
Right-of-use assets(19,296)(10,891)
Property and equipment, net(1,616)(1,948)
Total net deferred tax liabilities(20,912)(12,839)
Net deferred tax assets and liabilities$— $—