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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract] |
Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block] | Additionally, the Company’s lease-related obligations as of December 31, 2018, as determined under the prior accounting standard, were as follows (in thousands):
| Total |  | 2019 |  | 2020 |  | 2021 |  | 2022 |  | 2023
Lease-related obligations |  |  |  |  |  |  |  |  |  |  |
Imputed financing obligation (1) | $ | 8,081 |  |  | $ | 5,677 |  |  | $ | 2,404 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Leases | 19,415 |  |  | 5,333 |  |  | 4,883 |  |  | 4,960 |  |  | 3,271 |  |  | 968 |
Total | $ | 27,496 |  |  | $ | 11,010 |  |  | $ | 7,287 |  |  | $ | 4,960 |  |  | $ | 3,271 |  |  | $ | 968 |
_________________________________________ (1) With respect to the imputed financing obligation, the main components of the difference between the amount reflected in the table above and the amount reflected on the consolidated balance sheet are the interest on the imputed financing obligation and the estimated common area expenses over the future periods. The amount includes the amended Ohio lease and the amended Sunnyvale lease.
Company's material contractual obligations | As of December 31, 2019, the Company’s material contractual obligations were as follows (in thousands):
| Total |  | 2020 |  | 2021 |  | 2022 |  | 2023 |  | 2024
Contractual obligations (1) (2) |  |  |  |  |  |  |  |  |  |  |
Other contractual obligations | $ | 468 |  |  | $ | 234 |  |  | $ | 234 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Software licenses (3) | 31,530 |  |  | 13,525 |  |  | 11,977 |  |  | 6,028 |  |  | — |  |  | — |
Acquisition retention bonuses (4) | 9,998 |  |  | 3,499 |  |  | 3,499 |  |  | 3,000 |  |  | — |  |  | — |
Convertible notes | 172,500 |  |  | — |  |  | — |  |  | — |  |  | 172,500 |  |  | — |
Interest payments related to convertible notes | 8,308 |  |  | 2,372 |  |  | 2,372 |  |  | 2,372 |  |  | 1,192 |  |  | — |
Total | $ | 222,804 |  |  | $ | 19,630 |  |  | $ | 18,082 |  |  | $ | 11,400 |  |  | $ | 173,692 |  |  | $ | — |
______________________________________
(1) | The above table does not reflect possible payments in connection with unrecognized tax benefits of approximately $24.6 million including $22.8 million recorded as a reduction of long-term deferred tax assets and $1.8 million in long-term income taxes payable, as of December 31, 2019. As noted below in Note 19, “Income Taxes,” although it is possible that some of the unrecognized tax benefits could be settled within the next 12 months, the Company cannot reasonably estimate the outcome at this time.
(2) | For the Company’s lease commitments as of December 31, 2019, refer to Note 10, “Leases.”
(3) | The Company has commitments with various software vendors for agreements generally having terms longer than one year.
(4) | In connection with the acquisitions of Northwest Logic in August 2019 and the Secure Silicon IP and Protocols business in December 2019, the Company is obligated to pay retention bonuses to certain employees subject to certain eligibility and acceleration provisions including the condition of employment.

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- Definition Tabular disclosure of contractual obligation with different agreements in the form of imputed financing obligation, leases software licenses, convertible notes, and interest payments related to convertible notes. + References No definition available. + Details
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- Definition Tabular disclosure of the aggregate amount of payments due on known contractual obligations for the five years following the date of the latest balance sheet and the combined aggregate amount of maturities of known contractual obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 303 -Paragraph a -Subparagraph 5 + Details
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