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Selected Quarterly Financial Data (Unaudited)
 12 Months Ended
Dec. 31, 2022
Quarterly Financial Information Disclosure [Abstract]  
Selected Quarterly Financial Data (Unaudited) Selected Quarterly Financial Data (Unaudited)
The following table contains quarterly financial information for 2022 and 2021. The Company believes that the following information reflects all normal recurring adjustments necessary for a fair presentation of the information for the periods presented. The operating results for any quarter are not necessarily indicative of results for any future period.

Three months ended,
March 31, 2022June 30, 2022September 30, 2022December 31, 2022Total
(in thousands, except per share data)
(unaudited)
Total revenues$36,516 $50,126 $59,221 $50,382 $196,245 
Research and development$9,179 $8,467 $9,239 $9,197 $36,082 
General and administrative$11,925 $12,086 $14,920 $31,131 $70,062 
Total operating costs and expenses$34,383 $41,464 $46,880 $70,481 $193,208 
Net income (loss) from continuing operations$(12,929)$12,599 $9,645 $(14,534)$(5,219)
Net loss from discontinued operations$(2,456)$(13,494)$(9,241)$(2,951)$(28,142)
Net income (loss)$(15,385)$(895)$404 $(17,485)$(33,361)
Basic net income (loss) from continuing operations per share$(0.77)$0.75 $0.57 $(0.86)$(0.31)
Basic net loss from discontinued operations per share$(0.15)$(0.80)$(0.55)$(0.17)$(1.67)
Diluted net income (loss) from continuing operations per share$(0.77)$0.74 $0.56 $(0.86)$(0.31)
Diluted net loss from discontinued operations per share$(0.15)$(0.79)$(0.54)$(0.17)$(1.67)
Shares used in the computation of basic net income (loss) per share16,824 16,868 16,888 16,890 16,868 
Shares used in the computation of diluted net income (loss) per share16,824 17,058 17,132 16,890 16,868 

Three months ended,
March 31, 2021June 30, 2021September 30, 2021December 31, 2021Total
(in thousands, except per share data)
(unaudited)
Total revenues$46,592 $78,854 $59,694 $56,404 $241,544 
Research and development$9,046 $7,482 $7,430 $8,147 $32,105 
General and administrative$10,815 $12,412 $10,967 $12,596 $46,790 
Total operating costs and expenses$36,875 $24,941 $34,597 $41,280 $137,693 
Net income (loss) from continuing operations$22,767 $36,442 $20,338 $(3,194)$76,353 
Net loss from discontinued operations$(4,660)$(5,717)$(6,615)$(2,223)$(19,215)
Net income (loss)$18,107 $30,725 $13,723 $(5,417)$57,138 
Basic net income (loss) from continuing operations per share $1.39 $2.19 $1.22 $(0.19)$4.59 
Basic net loss from discontinued operations per share $(0.28)$(0.34)$(0.40)$(0.13)$(1.16)
Diluted net income (loss) from continuing operations per share $1.32 $2.12 $1.19 $(0.19)$4.43 
Diluted net loss from discontinued operations per share $(0.27)$(0.33)$(0.39)$(0.13)$(1.11)
Shares used in the computation of basic net income (loss) per share16,435 16,659 16,688 16,733 16,630 
Shares used in the computation of diluted net income (loss) per share17,248 17,172 17,142 16,733 17,246