CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 24,448	$ 19,888	$ 70,061	$ 60,968
Other comprehensive income (loss):
Unrealized appreciation (depreciation) of available-for-sale securities	2,920	(4,294)	20,161	(15,657)
Reclassification adjustment for realized losses included in net income	0	0	0	345
Income tax effect	(703)	1,034	(4,855)	3,687
Other comprehensive income (loss), net of tax	2,217	(3,260)	15,306	(11,625)
Comprehensive income	26,665	16,628	85,367	49,343
Comprehensive (income) loss attributable to noncontrolling interests	(10)	0	(42)	0
Comprehensive income available to common shareholders	$ 26,655	$ 16,628	$ 85,325	$ 49,343

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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