Other than temporary impairments unrealized gain (loss) on securities.

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

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- Definition

Amount of restricted investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-Subparagraph (b)(1)(i)
-URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729

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- Definition

Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 11
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Securities - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
Securities - Additional Information (Details) - USD ($)	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Schedule Of Available For Sale Securities [Line Items]
Proceeds from sale of available-for-sale securities	$ 0	$ 0	$ 0	$ 0
Other than temporary impairments unrealized losses on securities			0
Collateral Pledged
Schedule Of Available For Sale Securities [Line Items]
Number of securities pledged as collateral	$ 0		$ 0		$ 0
Stockholder's Equity \| Credit Concentration Risk \| Non-US Government and Agency Securities
Schedule Of Available For Sale Securities [Line Items]
Concentration risk, percentage			10.00%		10.00%