CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues
Revenues	$ 681,367	$ 445,774
Investment income	3,945	5,218
Net realized and unrealized gains (losses)	3,274	(11,091)
Revenues	688,586	439,901
Expenses
Amounts retained by agencies	283,935	199,366
Employee costs	169,397	135,652
Other operating expenses	125,482	71,858
Title losses and related claims	28,773	18,632
Depreciation and amortization	6,430	4,231
Interest	567	892
Total expenses	614,584	430,631
Income before taxes and noncontrolling interests	74,002	9,270
Income tax expense	(16,880)	(1,896)
Net income	57,122	7,374
Less net income attributable to noncontrolling interests	2,886	2,197
Net income attributable to Stewart	54,236	5,177
Net income	57,122	7,374
Other comprehensive income (loss), net of taxes:
Foreign currency translation adjustments	1,867	(11,442)
Change in net unrealized gains and losses on investments	(9,156)	(2,580)
Reclassification adjustment for realized gains and losses on investments	(145)	(80)
Other comprehensive loss, net of taxes:	(7,434)	(14,102)
Comprehensive income (loss)	49,688	(6,728)
Less net income attributable to noncontrolling interests	2,886	2,197
Comprehensive income (loss) attributable to Stewart	$ 46,802	$ (8,925)
Basic average shares outstanding (in shares)	26,736	23,638
Basic earnings per share attributable to Stewart (in usd per share)	$ 2.03	$ 0.22
Diluted average shares outstanding (in shares)	26,984	23,749
Diluted earnings per share attributable to Stewart (in usd per share)	$ 2.01	$ 0.22
Direct operations
Revenues
Revenues	$ 279,504	$ 198,283
Agency operations
Revenues
Revenues	345,932	242,030
Ancillary services
Revenues
Revenues	$ 55,931	$ 5,461