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Financing Arrangements - Additional Information (Details) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2021 USD ($) Business | Dec. 31, 2020 USD ($) | Aug. 31, 2020 USD ($) | Sep. 27, 2018 USD ($)
Umpqua Credit Agreement |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Credit facility outstanding amount repayment date | Sep. 27, 2022 |  |  |
Credit facility interest rate description | (1) a base rate, which fluctuates daily and is the greater of (a) the prime rate in effect as of any date of determination and (b) the daily LIBOR rate as of such date of determination plus 1.0% per annum, or (2) a LIBOR rate, which can be for a period of 30, 60 or 90 days at the Company’s option and is equal to the published rate in the Wall Street Journal for such 30-, 60- or 90-day period two business days prior to the commencement of such period, in each case plus 2.0% per annum |  |  |
Credit facility covenant description | Under the Umpqua Credit Agreement, the Company is subject to various negative covenants that limit, subject to certain exclusions, the Company’s ability to incur indebtedness, make loans, invest in or secure the obligations of other parties, pay or declare dividends, make distributions with respect to the Company’s securities, redeem outstanding shares of the Company’s stock, create subsidiaries, materially change the nature of its business, enter into related party transactions, engage in mergers and business combinations, the acquisition or transfer of Company assets outside of the ordinary course of business, grant liens or enter into collateral relationships involving company assets or reincorporate, reorganize or dissolve the Company. The Company is also required to maintain certain financial covenants tied to its leverage, interest charges and profitability. In December 2021, the Company obtained a waiver for the financial covenant tied to its profitability |  |  |
Credit facility borrowings outstanding | $ 0 | $ 0 |  |
Umpqua Credit Agreement | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument basis spread | 2.00% |  |  |
Period of interest rate option applied on credit facility | 30 days |  |  |
Period of interest rate option applied on credit facility | 60 days |  |  |
Period of interest rate option applied on credit facility | 90 days |  |  |
Number of business days prior to commencement of periods on interest rate | Business | 2 |  |  |
Credit facility variable rate | LIBOR |  |  |
Umpqua Credit Agreement | LIBOR | Fluctuating Rate Per Annum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument basis spread | 1.00% |  |  |
Revolving Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Credit facility maximum borrowing capacity under loan |  |  | $ 20,000,000.0 |
Revolving Facility | Umpqua Credit Agreement |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Credit agreement date | Sep. 27, 2018 |  |  |
Credit facility maximum borrowing capacity under loan |  |  |  | $ 10,000,000.0
Revolving Facility | Umpqua Credit Agreement | Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Increase in credit facility total | $ 25,000,000.0 |  |  |
Letter of Credit Subfacility | Umpqua Credit Agreement |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Credit facility maximum borrowing capacity under loan |  |  |  | $ 3,000,000.0

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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