Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Estimated title losses
Movement in Valuation Allowances and Reserves
Balance at beginning of period	$ 462,572	$ 462,622	$ 495,395
Additions charged to costs and expenses	96,532	91,147	106,265
Deductions	78,114	91,197	139,038
Balance At end of period	480,990	462,572	462,622
Valuation allowance for deferred tax assets
Movement in Valuation Allowances and Reserves
Balance at beginning of period	2,457	2,217	2,564
Additions charged to costs and expenses	0	240	(347)
Deductions	226
Balance At end of period	2,231	2,457	2,217
Allowance for uncollectible amounts
Movement in Valuation Allowances and Reserves
Balance at beginning of period	9,647	9,833	9,193
Additions charged to costs and expenses	207	3,349	3,396
Deductions	4,698	3,535	2,756
Balance At end of period	$ 5,156	$ 9,647	$ 9,833