Reserve for Known and Incurred but Not Reported Claims (Narrative) (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Reserve For Known And Incurred But Not Reported Claims [Line Items]
Known title claims, amount	$ 99,258,000		$ 165,330,000
Decline in reserve for known title claims, amount	66,100,000
Decline in reserve for known title claims, percentage	40.00%
Amount of payments to settle claims net of recovered through reinsurance	35,000,000
Amount recovered through reinsurance	21,000,000
Provision for title loss, percentage of title premiums and escrow fees	6.50%	6.00%
Ultimate loss rate	6.00%	6.00%
Estimated increase in loss reserve for prior policy years	4,300,000
Known title two large claims
Reserve For Known And Incurred But Not Reported Claims [Line Items]
Known title claims, amount			$ 56,000,000