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Reserves For Claims Summary Of The Company's Loss Reserves (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Dec. 31, 2016
Liability for Future Policy Benefits and Unpaid Claims and Claims Adjustment Expense [Abstract]
Known title claims	$ 3,927	$ 4,646
IBNR	28,557	30,155
Total loss reserves	$ 32,484	$ 34,801	$ 35,305
% of known title reserves	12.10%	13.40%
% of IBNR	87.90%	86.60%
% of total loss reserves	100.00%	100.00%

X

- Definition

Liability For Title Claims And Claims Adjustment Expense Incurred But Not Reported (IBNR) Percentage.

+ References

No definition available.

+ Details

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X

- Definition

Liability for title claims and claims adjustment expense known claims percentage.

+ References

No definition available.

+ Details

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X

- Definition

Liability for unpaid claims and claims adjustment expense reported and incurred but not reported (IBNR) claims percentage.

+ References

No definition available.

+ Details

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X

- References

No definition available.

+ Details

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- Definition

The amount needed to reflect the estimated ultimate cost of settling asserted and unasserted claims estimated to have been incurred by the insureds on or before the balance sheet date pertaining to the existence of a lien, encumbrance, defect or other matter purportedly affecting the title to the interest as insured.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=65670824&loc=d3e14764-158437

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (cc)
-URI http://asc.fasb.org/extlink&oid=65670824&loc=d3e14764-158437

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Namespace Prefix:	us-gaap_
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X

- Definition

Estimated costs as of the balance sheet date of settling insured claims and costs incurred in the claims settlement process for claims that have not yet been submitted to the insurance company for reimbursement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 5.W)
-URI http://asc.fasb.org/extlink&oid=27015833&loc=d3e570705-122907

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X

- Definition

Costs of settling insured claims and costs incurred in the claims settlement process for the specified year specifically for claims that have already been submitted to the insurance company for reimbursement.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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