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Income Taxes - Additional Information (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Tax Reconciliation [Line Items] |  |  |
Estimated effective income tax rate | 30.00% | 50.00% | 30.00%
Valuation allowance for deferred tax assets | $ 8,439,000 | $ 3,088,000 |
Deferred tax assets related to net operating losses for federal income tax purposes | $ 14,750,000 | 16,769,000 |
Ownership percentage | 50.00% |  |
Percentage increasing ownership | 5.00% |  |
Pre-tax net operating loss carryovers | $ 11,600,000 |  |
Built-in losses annual limitation | 1,100,000 |  |
Unrecognized tax benefits activity | 0 | 0 | $ 0
Interest or penalties related to unrecognized tax benefits | 0 | $ 0 | $ 0
Federal |  |  |
Income Tax Reconciliation [Line Items] |  |  |
Deferred tax assets related to net operating losses for federal income tax purposes | 8,500,000 |  |
State |  |  |
Income Tax Reconciliation [Line Items] |  |  |
Deferred tax assets related to net operating losses for federal income tax purposes | $ 6,300,000 |  |

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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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- Definition The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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