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Commitments and Contingencies	3 Months Ended
Commitments and Contingencies	Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Commitments In July 2021, we entered into a contract with Amazon Web Services, Inc. for cloud services from August 2021 through July 2024. Under the terms of the contract, we committed to spend $43.7 million, $46.8 million and $50.1 million in contract years one, two and three, respectively, for a total of $140.6 million. If we do not meet the minimum purchase obligation during any of those years, we will be required to pay the difference. As of March 31, 2022, we have met our commitment for the first year of our contract with AWS. Letters of Credit At March 31, 2022, we had $5.7 million of standby letters of credit related to our grant agreements with the State of Maryland and our operating leases. Collateral for our letters of credit was classified as restricted cash in cash and cash equivalents.