Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 17,050	$ 16,237
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Gain on sales of mortgage loans	(742)	(221)
Net gains on sales of securities	(170)
Provision for loan losses	200	1,650
Deferred income taxes	(1,825)	(2,648)
Net depreciation and amortization	2,486	2,337
(Increase) decrease in accrued interest receivable	(1,065)	222
Increase in other assets	(10,430)	(2,238)
Increase in other liabilities	1,982	2,184
Net cash provided by operating activities	7,486	17,523
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from maturities of short-term investments		3,561
Purchase of short-term investments	(8)	(1,069)
Proceeds from calls/maturities of securities available-for-sale	163,809	112,242
Proceeds from sales of securities available-for-sale	42,716
Purchase of securities available-for-sale	(168,889)	(132,953)
Proceeds from calls/maturities of securities held-to-maturity	310,694	183,533
Purchase of securities held-to-maturity	(443,705)	(163,064)
Net increase in loans	(356,915)	(101,378)
Proceeds from sales of portfolio loans	48,041	13,364
Capital expenditures	(2,063)	(1,780)
Net cash used in investing activities	(406,320)	(87,544)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase (decrease) in time deposits	23,275	(11,445)
Net increase in demand, savings, money market and NOW deposits	148,706	86,051
Net proceeds from exercise of stock options		329
Cash dividends	(1,650)	(1,646)
Net decrease in securities sold under agreements to repurchase	(590)	(19,340)
Net increase in other borrowed funds	37,000	82,356
Net cash provided by financing activities	206,741	136,305
Net (decrease) increase in cash and cash equivalents	(192,093)	66,284
Cash and cash equivalents at beginning of period	305,357	94,678
Cash and cash equivalents at end of period	113,264	160,962
Cash paid during the period for:
Interest	14,735	14,295
Income taxes	3,780	2,807
Change in unrealized gains (losses) on securities available-for-sale, net of taxes	(104)	1,509
Change in unrealized losses on securities transferred to held-to-maturity, net of taxes	2,697	2,524
Pension liability adjustment, net of taxes	639	169
Due (from) to broker	$ 4,430	$ 7,613