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Property and Equipment | 12 Months Ended
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Dec. 31, 2017
Property, Plant and Equipment [Abstract] |
Property and Equipment | PROPERTY AND EQUIPMENT Property and equipment are stated at cost and depreciated using the straight-line method over the estimated useful lives of the related assets and consist of the following (in thousands):
| At December 31,
| 2017 |  | 2016
Equipment (useful life 3 - 15 years) | $ | 1,557 |  |  | $ | 2,231 |
Tooling (useful life 2 - 5 years) | 371 |  |  | 863 |
Vehicles (useful life 5 years) | 47 |  |  | 39 |
Furniture and fixtures (useful life 5 years) | 137 |  |  | 170 |
Computer software (useful life 3 years) | 1,043 |  |  | 977 |
Leasehold improvements (the shorter of useful life or lease life) | 201 |  |  | 256 |
Construction in progress | 55 |  |  | 154 |
Property and equipment at cost | 3,411 |  |  | 4,690 |
Less: accumulated depreciation | (2,314 | ) |  | (2,365 | )
Property and equipment, net | $ | 1,097 |  |  | $ | 2,325 |
Depreciation expense was $0.7 million, $0.8 million, and $0.3 million for the years ended December 31, 2017, 2016 and 2015, respectively. During 2015, the Company invested in certain equipment to be used to increase our capabilities and reduce the cost of components used in our domestic manufacturing processes, as many of our sales opportunities were with respect to products made in the U.S. or meeting “Buy American” standards. These opportunities included our military maritime product line, as well as products for use in government-funded facilities, such as military bases, which must comply with certain domestic preference standards. As a result of the decline in 2016 sales as well as our expectation of limited sales of our military Intellitube® product going forward due to new competition for retrofit products for the U.S. Navy, coupled with the current cost of procuring components from our suppliers for such products, versus manufacturing them at a low volume, at December 31, 2016, we re-evaluated the economics of manufacturing versus purchasing such components from our suppliers. We concluded that we would no longer use the equipment and software purchased to conduct this manufacturing and evaluated the carrying value of the equipment and software compared to its fair value and determined that the equipment and software were impaired. Accordingly, we recorded an impairment loss of $0.9 million, to adjust the carrying value of the equipment and software to its net realizable value as of December 31, 2016. Due to the specialized nature of this equipment we were not able to find a buyer for this equipment in 2017. As a result, we re-evaluated the carrying of the equipment and software compared to its fair value and recorded an additional impairment loss of $0.2 million as of December 31, 2017. We have classified the net carrying value of this equipment as “Assets held for sale” in the accompanying Consolidated Balance Sheets as of December 31, 2017.

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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