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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2019
Summary of Significant Accounting Policies [Abstract] |
Inventories | Inventories consist of the following (U.S. dollars in thousands):
|  | December 31, |
|  | 2019 |  |  | 2018 |
Raw materials |  | $ | 87,942 |  |  | $ | 91,610 |
Finished goods |  |  | 187,949 |  |  |  | 204,211 |
Total inventory, net |  | $ | 275,891 |  |  | $ | 295,821 |
Inventory Reserves | Reserves of inventories consist of the following (U.S. dollars in thousands):
|  | 2019 |  |  | 2018 |  |  | 2017 |
Beginning balance |  | $ | 14,149 |  |  | $ | 8,081 |  |  | $ | 7,995 |
Additions |  |  | 14,931 |  |  |  | 23,940 |  |  |  | 16,382 |
Write-offs |  |  | (16,785 | ) |  |  | (17,872 | ) |  |  | (16,296 | )
Ending balance |  | $ | 12,295 |  |  | $ | 14,149 |  |  | $ | 8,081 |
Prepaid Expenses and Other | Prepaid expenses and other consist of the following (U.S. dollars in thousands):
|  | December 31, |
|  | 2019 |  |  | 2018 |
Deferred charges |  | $ | 8,142 |  |  | $ | 6,703 |
Prepaid income tax |  |  | 8,905 |  |  |  | — |
Prepaid inventory and import costs |  |  | 4,277 |  |  |  | 2,808 |
Prepaid rent, insurance and other occupancy costs |  |  | 12,516 |  |  |  | 8,799 |
Prepaid promotion and event cost |  |  | 7,159 |  |  |  | 6,013 |
Prepaid other taxes |  |  | 7,965 |  |  |  | 6,268 |
Prepaid software license |  |  | 3,317 |  |  |  | 4,006 |
Deposits |  |  | 1,208 |  |  |  | 1,470 |
Other |  |  | 16,365 |  |  |  | 15,810 |
Total prepaid expenses and other |  | $ | 69,854 |  |  | $ | 51,877 |
Estimated Useful Lives | Depreciation is recorded using the straight-line method over the following estimated useful lives:
Buildings | 39 years
Furniture and fixtures | 5 - 7 years
Computers and equipment | 3 - 5 years
Leasehold improvements | Shorter of estimated useful life or lease term
Scanners | 3 years
Vehicles | 3 - 5 years
Other Assets | Other assets consist of the following (U.S. dollars in thousands):
|  | December 31, |
|  | 2019 |  |  | 2018 |
Deferred taxes |  | $ | 30,780 |  |  | $ | 37,332 |
Deposits for noncancelable operating leases |  |  | 46,894 |  |  |  | 41,986 |
Cash surrender value for life insurance policies |  |  | 41,707 |  |  |  | 35,590 |
Other |  |  | 34,635 |  |  |  | 29,204 |
Total other assets |  | $ | 154,016 |  |  | $ | 144,112 |
Accrued Expenses | Accrued expenses consist of the following (U.S. dollars in thousands):
|  | December 31, |
|  | 2019 |  |  | 2018 |
Accrued sales force commissions and other payments |  | $ | 103,532 |  |  | $ | 128,022 |
Accrued income taxes |  |  | — |  |  |  | 6,674 |
Accrued other taxes |  |  | 29,657 |  |  |  | 38,693 |
Accrued payroll and other employee expenses |  |  | 30,610 |  |  |  | 68,155 |
Accrued payable to vendors |  |  | 34,760 |  |  |  | 34,539 |
Short-term lease liability |  |  | 39,349 |  |  |  | — |
Accrued royalties |  |  | 514 |  |  |  | 3,899 |
Sales return reserve |  |  | 3,903 |  |  |  | 3,577 |
Deferred revenue |  |  | 20,162 |  |  |  | 20,104 |
Other |  |  | 27,794 |  |  |  | 18,920 |
Total accrued expenses |  | $ | 290,281 |  |  | $ | 322,583 |
Other Liabilities | Other liabilities consist of the following (U.S. dollars in thousands):
|  | December 31, |
|  | 2019 |  |  | 2018 |
Deferred tax liabilities |  | $ | 10,741 |  |  | $ | 18,236 |
Reserve for other tax liabilities |  |  | 17,121 |  |  |  | 14,382 |
Liability for deferred compensation plan |  |  | 43,238 |  |  |  | 36,398 |
Pension plan benefits reserve |  |  | 3,454 |  |  |  | 3,023 |
Build to suit – financing obligation |  |  | — |  |  |  | 9,332 |
Deferred rent and deferred tenant incentives |  |  | — |  |  |  | 5,665 |
Asset retirement obligation |  |  | 6,631 |  |  |  | 6,444 |
Other |  |  | 15,610 |  |  |  | 18,436 |
Total other liabilities |  | $ | 96,795 |  |  | $ | 111,916 |
Reconciliation of Unrecognized Tax Benefits | A reconciliation of the beginning and ending amount of unrecognized tax benefits included in other liabilities is as follows (U.S. dollars in thousands):
|  | 2019 |  |  | 2018 |  |  | 2017 |
Gross balance at January 1 |  | $ | 11,456 |  |  | $ | 5,514 |  |  | $ | 5,290 |
Increases related to prior year tax positions |  |  | 775 |  |  |  | 5,161 |  |  |  | — |
Decreases related to prior year tax positions |  |  | — |  |  |  | — |  |  |  | (277 | )
Increases related to current year tax positions |  |  | 2,273 |  |  |  | 3,704 |  |  |  | 669 |
Settlements |  |  | — |  |  |  | (956 | ) |  |  | (159 | )
Decreases due to lapse of statutes of limitations |  |  | (1,051 | ) |  |  | (1,483 | ) |  |  | (187 | )
Currency adjustments |  |  | 54 |  |  |  | (484 | ) |  |  | 178 |
Gross balance at December 31 |  | $ | 13,507 |  |  | $ | 11,456 |  |  | $ | 5,514 |

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