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Description of Business and Significant Accounting Policies - Schedule of Cumulative Effect of Initially Applying New Guidance (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Jan. 01, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Assets |  |  |
Short-term accounts and notes receivable, less allowance for doubtful accounts | $ 255,474 |  | $ 340,930
Notes receivable – long–term portion, less allowance for doubtful accounts | 34,417 |  | 46,992
Allowance for doubtful accounts on short-term accounts and notes receivables | (59,906) |  | (45,726)
Allowance for doubtful accounts on long-term notes receivables | (7,895) |  | (6,667)
Deferred income taxes, net | 35,554 |  | 20,364
Stockholders’ equity |  |  |
Retained earnings | $ 200,893 |  | $ 195,455
Cumulative Impact from Adopting ASC 326 Guidance |  |  |
Assets |  |  |
Short-term accounts and notes receivable, less allowance for doubtful accounts |  | $ (41,100) |
Notes receivable – long–term portion, less allowance for doubtful accounts |  | (1,136) |
Allowance for doubtful accounts on short-term accounts and notes receivables |  | (41,100) |
Allowance for doubtful accounts on long-term notes receivables |  | (1,136) |
Deferred income taxes, net |  | 10,137 |
Stockholders’ equity |  |  |
Retained earnings |  | (32,099) |
Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |
Assets |  |  |
Short-term accounts and notes receivable, less allowance for doubtful accounts |  | 299,830 |
Notes receivable – long–term portion, less allowance for doubtful accounts |  | 45,856 |
Allowance for doubtful accounts on short-term accounts and notes receivables |  | (86,826) |
Allowance for doubtful accounts on long-term notes receivables |  | (7,803) |
Deferred income taxes, net |  | 30,501 |
Stockholders’ equity |  |  |
Retained earnings |  | $ 163,356 |

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