Debt - Additional Information (Details) ₩ in Billions					1 Months Ended	12 Months Ended
	Feb. 15, 2023 USD ($)	Oct. 31, 2022 USD ($)	May 27, 2022 USD ($)	Feb. 09, 2022 USD ($)	Nov. 30, 2022 USD ($) Customer	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2023 KRW (₩)	Dec. 31, 2022 KRW (₩)	Nov. 30, 2022 KRW (₩)	Oct. 31, 2022 KRW (₩)
Line Of Credit Facility [Line Items]
Debt obligations						$ 24,375,000
Current portion of long-term debt						24,073,000
DNI
Line Of Credit Facility [Line Items]
Debt							$ 29,800,000
DNI | Loan Agreement
Line Of Credit Facility [Line Items]
Maximum borrowing capacity		$ 5,000,000											₩ 7.2
Interest rate		6.00%											6.00%
Debt outstanding						5,700,000					₩ 7.2
Account receivables					$ 15,800,000							₩ 20.0
Interest expense on borrowings						100,000	100,000	$ 1,000,000
Line of credit security interest					$ 22,400,000							28.2
Other liabilities							0
Number of customers | Customer					2
Frequency of payment		monthly
Maturity date		Jan. 31, 2023
Principal payments		$ 0
Minimum | DNI | Loan Agreement
Line Of Credit Facility [Line Items]
Line of credit security interest					$ 7,900,000							₩ 10.0
Subsequent Event | DNI | Loan Agreement | Short-Term Loan Arrangement
Line Of Credit Facility [Line Items]
Maximum borrowing capacity									$ 4,100,000	₩ 5.0
JPMorgan Credit Facility
Line Of Credit Facility [Line Items]
Debt obligations						24,100,000	$ 0
Unamortized issuance costs						300,000
Current portion of long-term debt						22,800,000
JPMorgan Credit Facility | Letter of Credit
Line Of Credit Facility [Line Items]
Maximum borrowing capacity				$ 15,000,000		100,000
Revolving Credit Agreement | JPMorgan Credit Facility
Line Of Credit Facility [Line Items]
Maximum borrowing capacity			$ 30,000,000	30,000,000		30,000,000
Credit facility, current borrowing capacity				$ 10,000,000
Credit facility, expiration date				Feb. 09, 2024
Debt outstanding						4,000,000
Available Additional borrowing under credit facilities						$ 25,900,000
Amendment to Credit Agreement | JPMorgan Credit Facility
Line Of Credit Facility [Line Items]
Maturity date of revolving commitments			May 27, 2025
Credit facility covenant description						modifies the financial covenants to (i) increase the maximum permitted leverage ratio to 3.00 to 1.00 through September 30, 2022, 2.50 to 1.00 thereafter through September 30, 2023, and 2.00 to 1.00 thereafter and (ii) replace the minimum liquidity requirement with a minimum permitted fixed charge coverage ratio of 1.25 to 1.00.
Maximum permitted leverage ratio through September 30, 2022			3
Maximum permitted leverage ratio through September 30, 2023			2.5
Minimum permitted fixed charge coverage ratio			1.25
Maximum permitted leverage ratio after September 30 2023			2
Amendment to Credit Agreement | JPMorgan Credit Facility | Maximum
Line Of Credit Facility [Line Items]
Commitment fee percentage on unused capacity			0.35%
Amendment to Credit Agreement | JPMorgan Credit Facility | Maximum | Adjusted Term SOFR Rate
Line Of Credit Facility [Line Items]
Interest rate			3.50%
Amendment to Credit Agreement | JPMorgan Credit Facility | Maximum | Prime Rate
Line Of Credit Facility [Line Items]
Interest rate			2.50%
Amendment to Credit Agreement | JPMorgan Credit Facility | Minimum
Line Of Credit Facility [Line Items]
Commitment fee percentage on unused capacity			0.25%
Amendment to Credit Agreement | JPMorgan Credit Facility | Minimum | Adjusted Term SOFR Rate
Line Of Credit Facility [Line Items]
Interest rate			3.00%
Amendment to Credit Agreement | JPMorgan Credit Facility | Minimum | Prime Rate
Line Of Credit Facility [Line Items]
Interest rate			2.00%
Amendment to Credit Agreement | JPMorgan Credit Facility | Letter of Credit | Maximum
Line Of Credit Facility [Line Items]
Commitment fee percentage			3.50%
Amendment to Credit Agreement | JPMorgan Credit Facility | Letter of Credit | Minimum
Line Of Credit Facility [Line Items]
Commitment fee percentage			3.00%
Amendment to Credit Agreement | JPMorgan Credit Facility | Term Loan
Line Of Credit Facility [Line Items]
Maximum borrowing capacity			$ 25,000,000
Credit facility, expiration date			May 27, 2027
Second Amendment to Credit Agreement | Subsequent Event
Line Of Credit Facility [Line Items]
Minimum EBITDA for the fiscal quarter ending June 30, 2023	$ 1,000,000
Minimum EBITDA for fiscal quarter ending March 31, 2023	$ 1,000,000
Second Amendment to Credit Agreement | JPMorgan Credit Facility | Subsequent Event
Line Of Credit Facility [Line Items]
Commitment fee percentage on unused capacity	0.40%
Maximum permitted leverage ratio through September 30, 2023	0.025
Maximum permitted leverage ratio until December 31 2023	0.0125
Minimum liquidity for fiscal quarter ending March 31, 2023	$ 30,000,000
Minimum liquidity fiscal quarters ending June 30, 2023 and September 30, 2023	35,000,000
Minimum liquidity any time until September 30, 2023	$ 20,000,000
Leverage ratio	2.50%
Second Amendment to Credit Agreement | JPMorgan Credit Facility | Subsequent Event | Adjusted Term SOFR Rate
Line Of Credit Facility [Line Items]
Interest rate	4.00%
Second Amendment to Credit Agreement | JPMorgan Credit Facility | Subsequent Event | Prime Rate
Line Of Credit Facility [Line Items]
Interest rate	3.00%