Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2019 |
Sep. 30, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Income Taxes [Line Items] | ||||||||||
| Valuation allowance | $ 18,204 | $ 14,228 | $ 18,204 | $ 14,228 | ||||||
| Net operating losses | (2,569) | $ (3,900) | $ (4,287) | $ (6,448) | $ (11,334) | $ (10,516) | $ (6,591) | $ (7,971) | $ (17,204) | $ (36,412) |
| Operating loss, expiration date | 2037 | |||||||||
| Federal [Member] | ||||||||||
| Income Taxes [Line Items] | ||||||||||
| Net operating loss carryforwards | 94,300 | $ 94,300 | ||||||||
| Net operating losses | 30,300 | |||||||||
| State [Member] | ||||||||||
| Income Taxes [Line Items] | ||||||||||
| Net operating loss carryforwards | $ 25,400 | $ 25,400 | ||||||||
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- Definition Income taxes. No definition available.
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- Definition Operating loss expiration year. No definition available.
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The net result for the period of deducting operating expenses from operating revenues. No definition available.
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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