Bank Revolving Line of Credit and Fixed Credit Facilities - Additional Information (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) CreditFacility	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2017 USD ($)
Notes Payable
Line Of Credit Facility [Line Items]
Debt instrument outstanding amount	$ 14,759,000		$ 14,759,000
Bank of America
Line Of Credit Facility [Line Items]
Line of credit interest expense	11,000	$ 42,000	$ 21,000	$ 100,000
Bank of America | Term Loan
Line Of Credit Facility [Line Items]
Debt instrument payment terms			thirty-six equal monthly installments
Debt instrument date of first repayment					Apr. 13, 2020
Debt instrument maturity date					Mar. 13, 2023
Debt instrument interest rate					3.49%
Debt instrument outstanding amount	$ 300,000		$ 300,000			$ 400,000
Bank of America | Notes Payable | Term Loan
Line Of Credit Facility [Line Items]
Debt instrument principal amount					$ 1,000,000.0
Bank of America | Revolving Credit Facility
Line Of Credit Facility [Line Items]
Number of credit facilities | CreditFacility			1
Line of credit interest rate	2.11%	3.60%	2.11%	3.60%
Line of credit expiration date			Jul. 31, 2023
Line of credit outstanding amount	$ 0		$ 0			0
Bank of America | Non-Revolving Credit Facility
Line Of Credit Facility [Line Items]
Number of credit facilities | CreditFacility			3
Bank of America | Fixed Line 1
Line Of Credit Facility [Line Items]
Line of credit interest rate	3.51%	2.85%	3.51%	2.85%
Line of credit outstanding amount	$ 200,000		$ 200,000			300,000
Line of credit remaining borrowing capacity	0		$ 0
Line of credit payment date			Aug. 31, 2018
Line of credit frequency of principal payments description			sixty equal monthly installments
Line of credit facility maturity date			2023-08
Bank of America | Fixed Line 1 | Notes Payable
Line Of Credit Facility [Line Items]
Line of credit maximum borrowing capacity								$ 1,000,000.0
Bank of America | Fixed Line 2
Line Of Credit Facility [Line Items]
Line of credit outstanding amount	600,000		$ 600,000			$ 700,000
Line of credit remaining borrowing capacity	$ 0		$ 0
Line of credit payment date			Aug. 31, 2020
Line of credit frequency of principal payments description			sixty equal monthly installments
Line of credit facility maturity date			2025-09
Bank of America | Fixed Line 2 | Notes Payable
Line Of Credit Facility [Line Items]
Line of credit maximum borrowing capacity							$ 1,000,000.0