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Concentration of Credit Risk - Additional Information (Detail) | 6 Months Ended
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Jun. 30, 2018 USD ($) Institution
Debt Disclosure [Abstract] |
Uninsured cash balance | $ 400,000
Number of financial institutions in which cash is deposited | Institution | 1
Amount of debt outstanding with variable interest rate | $ 0

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- Definition Number of financial institutions in which cash deposited. + References No definition available. + Details
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- Definition The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation. + References No definition available. + Details
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Balance Type: | debit
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- References No definition available. + Details
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- Definition Amount of loan with variable or adjustable rate of interest. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 + Details
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