Condensed Consolidated Statements of Income (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Revenues        
Direct premiums and escrow fees $ 623,975 $ 609,606 $ 1,125,889 $ 1,111,018
Agent premiums 515,792 501,613 1,028,037 934,533
Information and other 182,771 180,838 337,848 337,985
Net investment income 30,925 27,864 58,295 48,422
Net realized investment gains 8,070 3,868 13,176 2,915
Total revenues 1,361,533 1,323,789 2,563,245 2,434,873
Expenses        
Personnel costs 417,725 407,452 800,437 773,575
Premiums retained by agents 403,669 395,278 808,708 738,014
Other operating expenses 216,361 211,824 403,036 411,982
Provision for policy losses and other claims 122,360 122,870 229,458 224,424
Depreciation and amortization 23,994 21,463 46,414 42,317
Premium taxes 16,027 16,012 30,404 29,481
Interest 7,790 7,268 15,589 14,510
Total expenses 1,207,926 1,182,167 2,334,046 2,234,303
Income before income taxes 153,607 141,622 229,199 200,570
Income taxes 51,156 48,043 74,076 69,195
Net income 102,451 93,579 155,123 131,375
Less: Net income attributable to noncontrolling interests 302 232 473 396
Net income attributable to the Company $ 102,149 $ 93,347 $ 154,650 $ 130,979
Net income per share attributable to the Company's stockholders (Note 8):        
Basic $ 0.92 $ 0.86 $ 1.40 $ 1.21
Diluted 0.92 0.85 1.40 1.19
Cash dividends declared per share $ 0.26 $ 0.25 $ 0.52 $ 0.50
Weighted-average common shares outstanding (Note 8):        
Basic 110,480 108,459 110,327 108,102
Diluted 110,978 109,796 110,842 109,586