Segment Information (Schedule of Selected Financial Information) (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Segment Reporting Information [Line Items]
Revenues	$ 1,317,043	$ 1,201,712
Income (loss) before income taxes	83,880	75,592
Depreciation and amortization	30,147	22,420
Capital expenditures	31,566	29,858
Operating Segments \| Title Insurance and Services
Segment Reporting Information [Line Items]
Revenues	1,202,948	1,098,470
Income (loss) before income taxes	98,245	87,675
Depreciation and amortization	28,552	21,076
Capital expenditures	30,393	28,243
Operating Segments \| Specialty Insurance
Segment Reporting Information [Line Items]
Revenues	110,265	103,040
Income (loss) before income taxes	10,039	12,243
Depreciation and amortization	1,551	1,248
Capital expenditures	1,173	1,615
Corporate
Segment Reporting Information [Line Items]
Revenues	4,117	208
Income (loss) before income taxes	(24,404)	(24,326)
Depreciation and amortization	44	96
Capital expenditures	0	0
Eliminations
Segment Reporting Information [Line Items]
Revenues	(287)	(6)
Income (loss) before income taxes	0	0
Depreciation and amortization	0	0
Capital expenditures	$ 0	$ 0

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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