Basis of Condensed Consolidated Financial Statements (Narrative) (Detail) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2016 |
Mar. 31, 2015 |
|
| Segment Reporting Information [Line Items] | ||
| Increase in premiums earned by agent | $ 512,245 | $ 432,920 |
| Increase in personnel costs | 382,712 | 366,123 |
| Increase in premiums earned by agent | 405,039 | 342,736 |
| Decrease in operating expenses | 186,675 | 200,158 |
| Decrease to direct premiums and escrow fees | 501,914 | 501,412 |
| Information and other | $ 155,077 | 157,147 |
| Title Insurance and Services | ||
| Segment Reporting Information [Line Items] | ||
| Increase in premiums earned by agent | 6,600 | |
| Increase in personnel costs | 7,800 | |
| Increase in premiums earned by agent | 300 | |
| Decrease in operating expenses | (8,100) | |
| Decrease to direct premiums and escrow fees | (10,500) | |
| Information and other | 10,500 | |
| Specialty Insurance | ||
| Segment Reporting Information [Line Items] | ||
| Increase in personnel costs | 300 | |
| Decrease in operating expenses | $ (300) | |