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Investment Securities (Notes) | 3 Months Ended
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Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract] |
investments in Debt and Marketable Equity Securities and Equity Method Investments [Text Block] | Investment Securities Investments in Available-for-sale Securities Our available-for-sale investment securities currently consist of short-term and long-term corporate bonds, short-term U.S. treasury securities and long-term government bonds and are considered “investment grade” and are carried at fair value. We assess our investment in available-for-sale debt securities for impairment each reporting period. If an unrealized loss exists, we determine whether any portion of the decline in fair value below the amortized cost basis is credit-related by reviewing several factors, including, but not limited to, the extent of the fair value decline and changes in the financial condition of the issuer. We record an impairment for credit-related losses through an allowance, limited to the amount of the unrealized loss. If we either intend to sell or it is more likely than not we will be required to sell the debt security before its anticipated recovery, any allowance is written off and the amortized cost basis is written down to fair value through a charge against net earnings. Unrealized gains and non-credit-related unrealized losses are recorded, net of tax, in other comprehensive income (loss). We did not have any investments in available-for-sale debt securities in unrealized loss positions as of March 31, 2023 or December 31, 2022. The amortized cost of the debt securities are adjusted for the amortization of premiums computed under the effective interest method. Such amortization is included in interest expense, net in our condensed consolidated statements of operations. Realized gains and losses are accounted for on the specific identification method. There have been no realized gains or losses on the disposal of these investments. The scheduled maturities of the debt securities are between 2022 and 2024. All short-term investment securities are callable within one year. Our short-term and long-term investments in available-for-sale securities consist of the following (in thousands):
| As of March 31, 2023
| Amortized Cost |  | Unrealized Holding Gains (Losses) |  | Fair Value
Short-term corporate bonds | $ | 1,320 |  |  | $ | — |  |  | $ | 1,320 |
Short-term U.S. treasury securities | 1,417 |  |  | — |  |  | 1,417 |
Short-term government bonds | 498 |  |  | — |  |  | 498 |
Total investment securities | $ | 3,235 |  |  | $ | — |  |  | $ | 3,235 |
| As of December 31, 2022
| Amortized Cost |  | Unrealized Holding Gains (Losses) |  | Fair Value
Short-term corporate bonds | $ | 2,314 |  |  | $ | — |  |  | $ | 2,314 |
Short-term U.S. treasury securities | 1,412 |  |  | — |  |  | 1,412 |
Short-term government bonds | 498 |  |  | — |  |  | 498 |
Long-term corporate bonds | 516 |  |  | — |  |  | 516 |
Total investment securities | $ | 4,740 |  |  | $ | — |  |  | $ | 4,740 |
Investments in Non-Marketable Equity Securities During the third quarter of 2021, we acquired an approximate 20% non-marketable equity interest in a nonpublic company and entered into a three-year distribution agreement where we have the exclusive rights to market, sell and distribute the company's products in exchange for a cash payment of $3.3 million. In addition, we were granted an exclusive license for all of the seller's intellectual property. At the expiration of the distribution agreement we have the right but not the obligation to acquire the remaining interest in the business. We apply the equity method of accounting for investments when we determine we have a significant influence, but not a controlling interest in the investee. We determine whether we have significant influence by considering key factors such as ownership interest, representation on the board of directors, participation in policy making decisions, business relationship and material intra-entity transactions, among other factors. Our equity method investment is reported at cost and adjusted each period for our share of the investee's income or (loss) and dividend paid, if any. We eliminate any intra-entity profits to the extent of our beneficial interest. We record our share of the investee's income or (loss) on a one quarter lag. We report our proportionate share of the investee's income or (loss) resulting from this investment in other income, net in our condensed consolidated statements of operations. The carrying value of our equity method investment is reported in other assets on our condensed consolidated balance sheets (see Note 11: Prepaid Expenses and Other Current Assets and Other Assets). We assess our equity method investments for impairment on an annual basis or whenever events or circumstances indicate that the carrying value of the investment may not be recoverable. Our recorded share of the investee's loss was not material for the three months ended March 31, 2023 and 2022. We did not receive any dividend distributions from this investment during the three months ended March 31, 2023 and 2022. Our non-marketable equity method investment consists of the following (in thousands):
|  | As of
|  | March 31, 2023 |  | December 31, 2022
Equity method investment |  | $ | 3,166 |  |  | $ | 3,178 |

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