Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash Flows From Operating Activities
Net income	$ 45,759	$ 19,936
Less net income (loss) from discontinued operations, net of taxes	(1,912)	1,352
Adjustments to reconcile net income to net cash provided by operating activities
Net accretion of bond premium	2,178	2,252
Depreciation and amortization	1,159	1,165
Stock-based compensation expense	1,281	1,044
Net realized investment (gains) losses	7,864	(2,249)
Net cash flows from trading investments	383	(610)
Deferred income tax benefit	(3,879)	(975)
Changes in:
Accrued investment income	(1,242)	(1,329)
Premiums receivable	(10,494)	(18,226)
Deferred policy acquisition costs	(1,734)	(2,623)
Reinsurance receivables	(312)	(582)
Prepaid reinsurance premiums	(253)	(59)
Income taxes receivable	6,031	4,751
Other assets	104	(341)
Losses and loss settlement expenses	(4,202)	16,823
Unearned premiums	11,521	23,231
Accrued expenses and other liabilities	(6,925)	(9,065)
Income taxes payable	17,581	0
Deferred income taxes	(14,039)	2,526
Other, net	1,708	(1,504)
Cash from operating activities - continuing operations	6,730	14,229
Cash from operating activities - discontinued operations	4,024	6,394
Cash from operating activities - gain on sale of discontinued operations	(34,851)	0
Total adjustments	(24,097)	20,623
Net cash provided by operating activities	23,574	39,207
Cash Flows From Investing Activities
Proceeds from sale of available-for-sale investments	0	1,096
Proceeds from call and maturity of available-for-sale investments	30,320	40,055
Proceeds from short-term and other investments	3,078	1,665
Proceeds from the sale of discontinued operations	276,055	0
Purchase of available-for-sale investments	(93,115)	(80,097)
Purchase of short-term and other investments	(676)	(1,590)
Net purchases and sales of property and equipment	(3,851)	(1,392)
Cash from investing activities - continuing operations	211,811	(40,263)
Cash from investing activities - discontinued operations	14,343	12,035
Net cash provided by (used in) investing activities	226,154	(28,228)
Cash Flows From Financing Activities
Payment of cash dividends	(6,960)	(6,367)
Repurchase of common stock	(5,404)	(5,749)
Issuance of common stock	2,293	1,244
Cash from financing activities - continuing operations	(10,071)	(10,872)
Cash from financing activities - discontinued operations	(11,547)	(17,304)
Net cash used in financing activities	(21,618)	(28,176)
Net Change in Cash and Cash Equivalents	228,110	(17,197)
Less: increase in cash and cash equivalents - discontinued operations	(6,820)	(1,125)
Net increase (decrease) in cash and cash equivalents - continuing operations	221,290	(18,322)
Cash and Cash Equivalents at Beginning of Period - Continuing Operations	95,562	89,194
Cash and Cash Equivalents at End of Period - Continuing Operations	$ 316,852	$ 70,872