Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues:
Direct premiums and escrow fees	$ 2,659,273	$ 2,507,669	$ 2,461,854
Agent premiums	2,373,140	2,284,906	2,360,659
Information and other	787,831	781,467	776,214
Net investment income	315,413	230,289	162,402
Net realized investment gains (losses)	66,404	(56,487)	11,234
Total revenues	6,202,061	5,747,844	5,772,363
Expenses:
Personnel costs	1,806,005	1,748,949	1,723,539
Premiums retained by agents	1,874,266	1,799,836	1,863,356
Other operating expenses	923,298	900,208	1,055,886
Provision for policy losses and other claims	446,040	452,633	450,410
Depreciation and amortization	129,021	125,927	128,053
Premium taxes	70,612	69,775	69,801
Interest	47,801	40,978	35,987
Total expenses	5,297,043	5,138,306	5,327,032
Income before income taxes	905,018	609,538	445,331
Income taxes	195,170	133,640	23,468
Net income	709,848	475,898	421,863
Less: Net income (loss) attributable to noncontrolling interests	2,438	1,402	(1,186)
Net income attributable to the Company	$ 707,410	$ 474,496	$ 423,049
Net income per share attributable to the Company’s stockholders:
Basic	$ 6.26	$ 4.21	$ 3.79
Diluted	6.22	4.19	3.76
Cash dividends declared per share	$ 1.68	$ 1.60	$ 1.44
Weighted-average common shares outstanding:
Basic	113,080	112,613	111,668
Diluted	113,655	113,279	112,435