v3.23.2
Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2022
Accounting Policies [Abstract]  
Reconciliation of Cash, Cash Equivalents, and Restricted Cash
The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported in the consolidated balance sheet that sum to the total of the amounts reported in the consolidated statement of cash flows (in thousands):
 December 31, 2022December 31, 2021December 31, 2020
Cash and cash equivalents$90,466 $149,800 $228,698 
Prepaid expenses and other current assets— — 395 
Other assets2,703 2,039 2,039 
Total cash, cash equivalents and restricted cash shown
   in the statement of cash flows		$93,169 $151,839 $231,132 
Revenue and Gross Accounts Receivable By Major Customer
Gross revenues and accounts receivable from each of the Company’s Customers or collaboration partners who individually accounted for 10% or more of total gross revenues and/or 10% or more of total gross accounts receivable consisted of the following:
 Percent of Total Gross Revenues
 Years Ended December 31,
 202220212020
Fresenius Medical Care Rx34 %33 %29 %
Otsuka Pharmaceutical Co. Ltd.20 %14 %29 %
AmerisourceBergen Drug Corporation15 %16 %12 %
McKesson Corporation— %13 %11 %
Cardinal Health, Inc.— %11 %— %
 
 Percent of
Gross Accounts Receivable
 As of December 31,
 20222021
Fresenius Medical Care Rx44 %16 %
AmerisourceBergen Drug Corporation16 %15 %
Cardinal Health, Inc.13 %10 %
McKesson Corporation10 %— %
Otsuka Pharmaceutical Co. Ltd.— %22 %
MTPC— %20 %
Summary of Property and Equipment and Related Accumulated Depreciation The following is the summary of property and equipment and related accumulated depreciation as of December 31, 2022 and 2021.
 Useful LifeDecember 31, 2022December 31, 2021
  (in thousands)
Computer equipment and software3$1,010 $1,010 
Furniture and fixtures572,086 2,086 
Equipment72,750 2,750 
Leasehold improvementsShorter of the useful life or remaining lease term8,687 8,573 
  14,533 14,419 
Less accumulated depreciation (9,319)(7,665)
Net property and equipment $5,214 $6,754