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Income Taxes - Additional Information (Detail) - USD ($) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Schedule Of Income Tax [Line Items] |  |  |  |
Pre-tax federal net operating losses |  | $ 3,671,000 |  |
Pre-tax federal net operating losses expiration date |  | 2024 |  |
Tax effected NOLs - Foreign |  | $ 3,841,000 | $ 4,551,000 | $ 2,051,000
Federal statutory rate |  | 35.00% | 35.00% | 35.00%
Remeasurement of DTAs charges |  | $ 489,000 |  |
statutory federal and state and local tax rate used to remeasure DTAs |  | 25.00% |  |
Unrecognized tax benefits |  | $ 0 | $ 0 |
Income tax examination description |  | Tax returns filed with each jurisdiction generally remain open to examination under the normal three-year statute of limitation. As of December 31, 2017, with few exceptions, the Company was no longer subject to income tax examinations by any taxing authority for years before 2014. |  |
Scenario, Forecast [Member] |  |  |  |
Schedule Of Income Tax [Line Items] |  |  |  |
Federal statutory rate | 21.00% |  |  |

X
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- Definition A brief description of status of the tax examination, significant findings to date, and the entity's position with respect to the findings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition This represent the amount that our DTAs were reduced by - due to applying a new tax rate to them. + References No definition available. + Details
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- Definition Statutory federal and state and local tax rate used to remeasure DTAs in connection with tax reform. + References No definition available. + Details
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