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v3.19.1

Summary of Significant Accounting Policies (Details) - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Jan. 01, 2018 | Jan. 01, 2017 | Dec. 31, 2016
Property, Plant and Equipment |  |  |  |  |
Cash and cash equivalents | $ 10,282,000 | $ 37,678,000 |  |  | $ 30,363,000
Impairments of long lived assets | 0 | 0 |  |  |
Goodwill impairment | 0 | 0 |  |  |
Impairment of finite lived intangible assets | 0 | 0 |  |  |
Accrued warranty | 2,057,000 | 8,682,000 |  |  |
Foreign currency transaction loss | (483,000) | 804,000 |  |  |
Research and development expenses | $ 2,646,000 | 2,241,000 |  |  |
Retained Earnings |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
ASU adjustments |  |  |  | $ 6,769,000 |
ASU 2016-06 |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
ASU adjustments |  |  | $ (305,000) |  |
ASU 2016-06 | Retained Earnings |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
ASU adjustments |  |  | $ (305,000) |  |
Minimum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Finite lived intangible asset, useful life | 4 years |  |  |  |
Maximum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Finite lived intangible asset, useful life | 25 years |  |  |  |
Weighted Average |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Finite lived intangible asset, useful life | 15 years |  |  |  |
Buildings | Minimum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Property, plant and equipment useful life | 5 years |  |  |  |
Buildings | Maximum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Property, plant and equipment useful life | 40 years |  |  |  |
Machinery and equipment | Minimum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Property, plant and equipment useful life | 2 years |  |  |  |
Machinery and equipment | Maximum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Property, plant and equipment useful life | 13 years |  |  |  |
Leasehold improvements | Minimum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Property, plant and equipment useful life | 5 years |  |  |  |
Leasehold improvements | Maximum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Property, plant and equipment useful life | 20 years |  |  |  |
Non Domestic |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Cash and cash equivalents | $ 8,058,000 | 35,807,000 |  |  |
Bank term deposits | $ 16,000 | $ 17,000 |  |  |

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