Aggregate number of common shares reserved for future issuance.

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The quantified amount of the future effect on cash flows.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The difference between the carrying value and the sale price of equity securities, not separately or otherwise categorized as trading or available-for-sale. This element includes investments in which the entity holds a small ownership stake (generally, less than 20% of the shares outstanding) and cannot exert significant influence.

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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).

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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.

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Cash received on stock transaction after deduction of issuance costs.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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Price of a single share of a number of saleable stocks of a company.

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Number of increase (decrease) in shares of stock classified as other.

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Related Party Transactions 1347 Property Insurance Holdings, Inc. (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				12 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Jun. 30, 2014	Mar. 31, 2014
Related Party Transaction [Line Items]
Gain on change in fair value of equity investments					$ 381	$ 0
Clause 2 [Member]
Related Party Transaction [Line Items]
Share Price							$ 12.00	$ 15.00
Common Stock, Capital Shares Reserved for Future Issuance							125,000	125,000
Clause 3 [Member]
Related Party Transaction [Line Items]
Share Price							$ 15.00
Common Stock, Capital Shares Reserved for Future Issuance								125,000
Clause 1 and 2 [Member]
Related Party Transaction [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance							225,000	250,000
Clause 1 [Member]
Related Party Transaction [Line Items]
Share Price							$ 12.00
Common Stock, Capital Shares Reserved for Future Issuance								125,000
Clause 1, 2 and 3 [Member]
Related Party Transaction [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance							350,000	375,000
Management [Member]
Related Party Transaction [Line Items]
Sale of Stock, Consideration Received on Transaction	$ 1,000		$ 300
Proceeds from Sale of Debt Securities, Available-for-sale					1,300
Gain on change in fair value of equity investments					$ 700
Effect on Future Cash Flows, Amount		$ 1,000
Sale of Stock, Number of Shares Issued in Transaction			3,000,000
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Share Price							$ 10.00
Equity Method Investment, Ownership Percentage	0.00%			8.00%		8.00%
Effect on Future Cash Flows, Amount		$ 2,000
Sale of Stock, Number of Shares Issued in Transaction						3,000,000
Common Stock, Capital Shares Reserved for Future Issuance							100,000
Common Stock [Member] \| Management [Member]
Related Party Transaction [Line Items]
Stockholders' Equity, Other Shares				424,572
Common Stock [Member] \| Affiliated Entity [Member]
Related Party Transaction [Line Items]
Stockholders' Equity, Other Shares				1,500,000
Minimum [Member]
Related Party Transaction [Line Items]
Share Price							$ 10.00
Maximum [Member]
Related Party Transaction [Line Items]
Share Price							$ 18.00	$ 18.00