Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
NET EARNINGS	$ 75,189	$ 66,972
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	8,069	6,244
PROVISION FOR LOAN LOSSES	5,508	3,710
Securities premium amortization (discount accretion), net	20,493	14,739
Gain on sale of assets, net	(379)	(815)
Deferred federal income tax benefit	(1,487)	(844)
Change in loans held for sale, net	(12,801)	(6,103)
Change in other assets	(9,655)	8,936
Change in other liabilities	8,982	6,721
Total adjustments	18,730	32,588
Net cash provided by operating activities	93,919	99,560
CASH FLOWS FROM INVESTING ACTIVITIES:
Cash paid for asset acquisition of 4Trust Mortgage, Inc.	(1,931)
Cash received in acquisition of FBC Bancshares, Inc.	65,197
Net decrease in interest-bearing time deposits in banks	12,511	12,683
Activity in available-for-sale securities:
Sales	34,541	3,590
Maturities	2,189,905	1,677,839
Purchases	(2,501,587)	(1,794,233)
Activity in held-to-maturity securities - maturities	155	130
Net increase in loans	(91,259)	(146,452)
Purchases of bank premises and equipment and other assets	(12,437)	(12,993)
Proceeds from sale of other assets	727	3,823
Net cash used in investing activities	(304,178)	(255,613)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase (decrease) in noninterest-bearing deposits	(2,096)	143,663
Net increase in interest-bearing deposits	5,540	185,626
Net increase (decrease) in short-term borrowings	120,668	(121,979)
Common stock transactions:
Proceeds from stock issuances	1,291	1,076
Dividends paid	(28,217)	(25,609)
Net cash provided by financing activities	97,186	182,777
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(113,073)	26,724
CASH AND CASH EQUIVALENTS, beginning of period	253,471	212,012
CASH AND CASH EQUIVALENTS, end of period	140,398	238,736
SUPPLEMENTAL INFORMATION AND NONCASH TRANSACTIONS:
Interest paid	3,066	3,155
Federal income tax paid	22,179	21,281
Transfer of loans to foreclosed assets	97	1,085
Investment securities purchased but not settled	$ 17,869	$ 61,332