Debt, Commitments and Contingencies - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Debt, Commitments and Contingencies [Line Items]
Debt security investment outstanding borrowing amount	$ 15,000,000
Interest on loan withdrawn from margin account	1.00%
Payments for closing of escrow, financed under margin loan	$ 15,000,000
Margin account, outstanding amount	15,048,000	$ 15,019,000
Interest expense	29,000
Non-cancelable purchase obligations	25,400,000
Reagents and Other Supplies
Debt, Commitments and Contingencies [Line Items]
Non-cancelable purchase obligations, payable within twelve months	22,800,000
Non-cancelable purchase obligations, payable within next twenty-four months	1,200,000
Medical Lab Equipment
Debt, Commitments and Contingencies [Line Items]
Non-cancelable purchase obligations, payable within twelve months	$ 1,400,000
Maximum
Debt, Commitments and Contingencies [Line Items]
Interest rate	1.00%