Fair value measurements	12 Months Ended
Fair value measurements	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Fair value measurements	Note 17. Fair value measurements Recurring measurements Our financial instruments consist of cash, cash equivalents, restricted cash, accounts receivable, accounts payable, and debt obligations. Cash, cash equivalents, accounts receivable and accounts payable are stated at their carrying value, which approximates fair value due to the short time to the expected receipt or payment date. We did not hold any financial instruments measured at fair value on a recurring basis as categorized within the fair value hierarchy at December 31, 2021, and 2020. Non-recurring measurements We had no debt outstanding at December 31, 2021. At December 31, 2020, we had outstanding borrowings of (i) $1.0 million under our revolving line of credit agreement with Western Alliance Bank, which was deemed to approximate fair value as the borrowings bore interest at variable rates, and (ii) $0.8 million under a fixed rate PPP loan, which was deemed to have no fair value at that date based on receipt of notification from the Small Business Administration on January 20, 2021, that forgiveness of the full amount of the loan had been approved. There were no indications of impairment of any of our long-lived assets during 2021 that required us to evaluate recoverability or estimate fair value of those assets.

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.