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v3.19.2

Discontinued Operations - Summary of Assets and Liabilities Related to Discontinued Operation Held for Sale (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Noncurrent liabilities held for sale: |  |  |
Total liabilities held for sale | $ 952 | $ 245 | $ 201
Held for Sale [Member] |  |  |
Current assets held for sale: |  |  |
Accounts receivable, net | 202 | 108 | 15
Inventory, net | 2,896 | 2,841 | 3,076
Other current assets | 356 | 328 | 531
Long-term assets held for sale: |  |  |
Property and equipment, net | 223 | 260 | 727
Other noncurrent assets | 1,787 | 1,866 | 2,528
Goodwill | 3,550 | 3,550 | 3,550
Intangible assets, net | 5,645 | 5,957 | 7,207
Operating lease right-of-use assets | 1,030 |  |
Total assets | 15,689 | 14,910 | 17,634
Current liabilities held for sale: |  |  |
Accounts payable and accrued liabilities | 495 | 580 | 584
Operating lease liabilities | 355 |  |
Noncurrent liabilities held for sale: |  |  |
Other noncurrent liabilities | 70 | 78 | 107
Deferred revenues | 142 | 167 | 94
Operating lease liabilities | 740 |  |
Total liabilities held for sale | $ 1,802 | 825 | $ 785
Held for Sale [Member] | Previously Reported |  |  |
Current assets held for sale: |  |  |
Inventory, net |  | $ 2,840 |

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