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Income Taxes - Additional Information (Detail) - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2018 | Dec. 31, 2017 | Mar. 31, 2018
Income Taxes [Line Items] |  |  |
Liability unrecognized tax benefits | $ 0 |  | $ 0
Percentage of corporate income tax rate | 21.00% | 35.00% |
Income tax benefit from remeasurement of deferred tax assets and liabilities |  |  | 971,000
One-time transition tax on accumulated foreign earnings |  |  | $ 185,000
Incremental tax on GILTI estimated amount | $ 30,000 |  |
Earliest Tax Year [Member] | Federal Tax Jurisdictions [Member] |  |  |
Income Taxes [Line Items] |  |  |
Open tax year | 2015 |  |
Earliest Tax Year [Member] | State Tax Jurisdictions [Member] |  |  |
Income Taxes [Line Items] |  |  |
Open tax year | 2013 |  |
Earliest Tax Year [Member] | International Tax Jurisdictions [Member] |  |  |
Income Taxes [Line Items] |  |  |
Open tax year | 2015 |  |
Latest Tax Year [Member] | Federal Tax Jurisdictions [Member] |  |  |
Income Taxes [Line Items] |  |  |
Open tax year | 2017 |  |
Latest Tax Year [Member] | State Tax Jurisdictions [Member] |  |  |
Income Taxes [Line Items] |  |  |
Open tax year | 2017 |  |
Latest Tax Year [Member] | International Tax Jurisdictions [Member] |  |  |
Income Taxes [Line Items] |  |  |
Open tax year | 2017 |  |

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- Definition The amount of estimated incremental U.S. tax to be incurred related to the global intangible low-taxed income provisions of the Tax Cuts and Jobs Act. + References No definition available. + Details
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- Definition Income taxes. + References No definition available. + Details
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- Definition One-time transition tax on accumulated post-1986 earnings and profits of foreign subsidiary previously deferred from U.S. income taxes. + References No definition available. + Details
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 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 Amount of income tax expense (benefit) from continuing operations attributable to an adjustment of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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- Definition Tax year that remains open to examination under enacted tax laws, in CCYY format. + 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 (e) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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