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Discontinued Operations (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 | Dec. 31, 2018
Discontinued Operations And Disposal Groups [Abstract] |  |
Summary of Business Consideration to Calculation of the Loss on Sale | The following table summarizes the calculation of the loss on sale of the cell therapy business, which will be finalized during the fourth quarter of 2019 (in thousands):
Consideration received |  | $ | 7,000 |
Transaction costs |  |  | (1,161 | )
Net cash proceeds |  |  | 5,839 |
Less: |  |  |  |
Carrying value of business and assets sold |  |  | 12,145 |
Net loss on sale of business |  | $ | 6,306 |
| The following table summarizes the calculation of the loss on sale of the cell therapy business, which will be finalized during the fourth quarter of 2019 (in thousands):
Consideration received |  | $ | 7,000 |
Transaction costs |  |  | (1,161 | )
Net cash proceeds |  |  | 5,839 |
Less: |  |  |  |
Carrying value of business and assets sold |  |  | 12,145 |
Net loss on sale of business |  | $ | 6,306 |
Summary of Assets and Liabilities Held for Sale and Operating Results Related to Discontinued Operations | Assets and liabilities related to discontinued operations or held for sale consisted of the following:
|  | March 31, 2019 |  |  | December 31, 2018 |
Assets |  |  |  |  |  |  |  |
Current assets held for sale: |  |  |  |  |  |  |  |
Accounts receivable, net |  | $ | 202 |  |  | $ | 108 |
Inventory, net |  |  | 2,896 |  |  |  | 2,841 |
Other current assets |  |  | 356 |  |  |  | 328 |
Long-term assets held for sale: |  |  |  |  |  |  |  |
Property and equipment, net |  |  | 223 |  |  |  | 260 |
Operating lease right-of-use assets |  |  | 1,030 |  |  |  | — |
Other noncurrent assets |  |  | 1,787 |  |  |  | 1,866 |
Goodwill |  |  | 3,550 |  |  |  | 3,550 |
Intangible assets, net |  |  | 5,645 |  |  |  | 5,957 |
Total assets |  | $ | 15,689 |  |  | $ | 14,910 |
Liabilities |  |  |  |  |  |  |  |
Current liabilities held for sale: |  |  |  |  |  |  |  |
Accounts payable and accrued liabilities |  | $ | 495 |  |  | $ | 580 |
Operating lease liabilities |  |  | 355 |  |  |  | — |
Noncurrent liabilities held for sale: |  |  |  |  |  |  |  |
Other noncurrent liabilities |  |  | 70 |  |  |  | 78 |
Operating lease liabilities |  |  | 740 |  |  |  | — |
Deferred revenues |  |  | 142 |  |  |  | 167 |
Total liabilities held for sale |  | $ | 1,802 |  |  | $ | 825 |
The following table summarizes the results of discontinued operations for the periods presented (in thousands):
|  | Three months ended March 31, |
|  | 2019 |  |  | 2018 |
Product revenue |  | $ | 703 |  |  | $ | 731 |
Cost of revenues |  |  | 659 |  |  |  | 579 |
Gross profit |  |  | 44 |  |  |  | 152 |
Operating expenses: |  |  |  |  |  |  |  |
Research and development |  |  | 420 |  |  |  | 1,104 |
Sales and marketing |  |  | 314 |  |  |  | 384 |
General and administrative |  |  | 145 |  |  |  | 146 |
Total operating expenses |  |  | 879 |  |  |  | 1,634 |
Operating loss |  |  | (835 | ) |  |  | (1,482 | )
Other income (expense) |  |  | 149 |  |  |  | 352 |
Loss from discontinued operations |  | $ | (686 | ) |  | $ | (1,130 | )
Included in the statement of cash flows are the following non-cash adjustments related to the discontinued operations (in thousands):
|  | For the three months ended March 31, |
|  | 2019 |  |  | 2018 |
Depreciation and amortization |  | $ | 344 |  |  | $ | 393 |
Provision for excess inventory |  | $ | — |  |  | $ | 326 |
Loss on asset disposal |  | $ | — |  |  | $ | 22 |
| Assets and liabilities related to discontinued operations or held for sale consisted of the following:
|  | December 31, 2018 |  |  | December 31, 2017 |
Assets |  |  |  |  |  |  |  |
Current assets held for sale: |  |  |  |  |  |  |  |
Accounts receivable, net |  | $ | 108 |  |  | $ | 15 |
Inventory, net |  |  | 2,841 |  |  |  | 3,076 |
Other current assets |  |  | 328 |  |  |  | 531 |
Long-term assets held for sale: |  |  |  |  |  |  |  |
Property and equipment, net |  |  | 260 |  |  |  | 727 |
Other noncurrent assets |  |  | 1,866 |  |  |  | 2,528 |
Goodwill |  |  | 3,550 |  |  |  | 3,550 |
Intangible assets, net |  |  | 5,957 |  |  |  | 7,207 |
Total assets |  | $ | 14,910 |  |  | $ | 17,634 |
Liabilities |  |  |  |  |  |  |  |
Current liabilities held for sale: |  |  |  |  |  |  |  |
Accounts payable and accrued liabilities |  | $ | 580 |  |  | $ | 584 |
Noncurrent liabilities held for sale: |  |  |  |  |  |  |  |
Other noncurrent liabilities |  |  | 78 |  |  |  | 107 |
Deferred revenues |  |  | 167 |  |  |  | 94 |
Total liabilities held for sale |  | $ | 825 |  |  | $ | 785 |
The following table summarizes the results of discontinued operations for the periods presented (in thousands):
|  | Year ended December 31, |
|  | 2018 |  |  | 2017 |
Product revenue |  | $ | 2,671 |  |  | $ | 2,689 |
License revenue |  |  | 1,000 |  |  |  | — |
Total revenues |  |  | 3,671 |  |  |  | 2,689 |
Cost of revenues |  |  | 2,373 |  |  |  | 2,543 |
Gross profit |  |  | 1,298 |  |  |  | 146 |
Operating expenses: |  |  |  |  |  |  |  |
Research and development |  |  | 3,099 |  |  |  | 6,605 |
Sales and marketing |  |  | 1,375 |  |  |  | 2,252 |
General and administrative |  |  | 760 |  |  |  | 894 |
Total operating expenses |  |  | 5,234 |  |  |  | 9,751 |
Operating loss |  |  | (3,936 | ) |  |  | (9,605 | )
Other income (expense) |  |  | 180 |  |  |  | 13 |
Loss from discontinued operations |  | $ | (3,756 | ) |  | $ | (9,592 | )
Included in the statement of cash flows are the following non-cash adjustments related to the discontinued operations (in thousands):
|  | For the year ended December 31, |
|  | 2018 |  |  | 2017 |
Depreciation and amortization |  | $ | 1,625 |  |  | $ | 1,630 |
Provision for excess inventory |  | $ | 463 |  |  | $ | 340 |
(Loss) gain on asset disposal |  | $ | (36 | ) |  | $ | 40 |
The changes in the carrying amounts of finite-life intangible assets related to our discontinued operations for the years ended December 31, 2018 and 2017 are as follows (in thousands):
|  | December 31, 2018 |  |  | December 31, 2017 |
Intangibles, net: |  |  |  |  |  |  |  |
Beginning balance |  | $ | 7,207 |  |  | $ | 8,447 |
Increase |  |  | — |  |  |  | — |
Amortization |  |  | (1,250 | ) |  |  | (1,240 | )
Ending balance |  | $ | 5,957 |  |  | $ | 7,207 |

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