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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net cash provided by (used in) operating activities	$ 55,988	$ 158,081
Cash flows from investing activities:
Proceeds from sale of property and equipment	18	17
Purchases of property and equipment	(8,030)	(4,024)
Purchases of equity securities	(890)	(19,106)
Purchases of available-for-sale debt securities	(143,728)	(205,738)
Purchases of investment real estate, net	(883)	(1,269)
Proceeds from sales of equity securities	29,137	4,127
Proceeds from sales of available-for-sale debt securities	43,205	119,222
Proceeds from sales of investment real estate	10,537	0
Maturities of available-for-sale debt securities	68,525	64,480
Maturities of available-for-sale short-term investments	0	10,000
Net cash provided by (used in) investing activities	(2,109)	(32,291)
Cash flows from financing activities:
Preferred stock dividend	(5)	(5)
Common stock dividend	(11,153)	(9,821)
Issuance of common stock for stock option exercises	239	73
Purchase of treasury stock	(24,224)	(11,116)
Payments related to tax withholding for share-based compensation	(2,815)	(6,583)
Repayment of debt	(735)	(736)
Net cash provided by (used in) financing activities	(38,693)	(28,188)
Cash and cash equivalents, and restricted cash and cash equivalents:
Net increase (decrease) during the period	15,186	97,602
Balance, beginning of period	169,063	216,121
Balance, end of period	184,249	313,723
Cash and cash equivalents, and restricted cash and cash equivalents within the Consolidated Balance Sheets
Total cash and cash equivalents and restricted cash and cash equivalents	$ 169,063	$ 216,121

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