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The Company and Summary of Significant Accounting Policies - Property, Plant, and Equipment (Details) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 USD ($) segment | Dec. 31, 2016 | Dec. 31, 2015
Segment Reporting |  |  |  |
Number of operating segments | segment |  | 1 |  |
Income Taxes |  |  |  |
Federal Statutory Income Tax Rate, Percent |  | 35.00% | 35.00% | 35.00%
One time transition tax rate impact on cash assets (as a percent) |  | 15.50% |  |
One time transition tax rate impact on specific assets (as a percent) |  | 8.00% |  |
Tax reform, accumulated foreign earnings tax provision |  | $ 20,900,000 |  |
Tax reform, alternate minimum tax |  | 500,000 |  |
Net impact of tax reform |  | 0 |  |
Tax reform, change in net deferred tax assets |  | 10,900,000 |  |
Tax reform, change in valuation allowance |  | $ 10,900,000 |  |
Forecast |  |  |  |
Income Taxes |  |  |  |
Federal Statutory Income Tax Rate, Percent | 21.00% |  |  |
Minimum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, estimated economic life |  | 1 year |  |
Maximum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, estimated economic life |  | 27 years 6 months |  |
Computers | Minimum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, estimated economic life |  | 3 years |  |
Computers | Maximum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, estimated economic life |  | 5 years |  |
Office Equipment | Minimum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, estimated economic life |  | 3 years |  |
Office Equipment | Maximum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, estimated economic life |  | 5 years |  |
Software | Minimum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, estimated economic life |  | 3 years |  |
Software | Maximum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, estimated economic life |  | 5 years |  |
Furniture and Fixtures | Minimum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, estimated economic life |  | 3 years |  |
Furniture and Fixtures | Maximum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, estimated economic life |  | 5 years |  |
Automobiles | Minimum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, estimated economic life |  | 5 years |  |
Automobiles | Maximum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, estimated economic life |  | 10 years |  |
Leasehold improvements |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, estimated economic life |  | 10 years |  |
Building improvements |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, estimated economic life |  | 10 years |  |
Machinery and equipment | Minimum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, estimated economic life |  | 1 year |  |
Machinery and equipment | Maximum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, estimated economic life |  | 5 years |  |
Building |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, estimated economic life |  | 27 years 6 months |  |

X
- Definition Amount of reasonable estimate for income tax expense from alternate minimum tax pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete. + References No definition available. + Details
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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