Reserves for Claims Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Realized claim recoveries	$ 1,040,000	$ 467,000	$ 790,000
Provision rate for title insurance claims	0.20%	4.00%	4.80%
Minimum
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Large claim threshold	$ 250,000