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Leases - Adoption of ASC 842 (Details) - USD ($) | Mar. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018
--- | --- | --- | ---
ASSETS |  |  |
Right-of-use operating lease assets | $ 1,411,000 | $ 1,592,000 | $ 0
Liabilities |  |  |
Other accrued liabilities | 4,900,000 | 6,077,000 | 6,099,000
Operating lease liabilities - current | 558,000 | 650,000 | 0
Operating lease liabilities - non-current | 845,000 | 942,000 | 0
Equity |  |  |
Accumulated deficit | $ (103,762,000) | (102,473,000) | $ (102,495,000)
Accounting Standards Update 2016-02 |  |  |
ASSETS |  |  |
Right-of-use operating lease assets |  | 1,592,000 |
Liabilities |  |  |
Other accrued liabilities |  | (22,000) |
Operating lease liabilities - current |  | 650,000 |
Operating lease liabilities - non-current |  | 942,000 |
Equity |  |  |
Accumulated deficit |  | $ 22,000 |

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