Consolidated Statements of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 4,476	$ 3,808
Adjustments to reconcile net income to net cash provided by operating activities:
Mortgage loans originated for sale	(13,666)
Proceeds from mortgage loans sold	10,865
Gain on sales of mortgage loans held for sale	(170)
Net gains on sales of investments	(883)	(148)
Provision for loan losses	750	1,100
Deferred income taxes	(441)	(444)
Net depreciation and amortization	1,619	1,505
Increase in accrued interest receivable	(200)	(72)
Increase in other assets	(3,764)	(785)
Increase in other liabilities	1,688	325
Net cash provided by operating activities	274	5,289
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from maturities of short-term investments	6,317	11,101
Purchase of short-term investments	(1,061)	(6,053)
Proceeds from calls/maturities of securities available-for-sale	90,591	144,891
Proceeds from sales of securities available-for-sale	87,570	72,198
Purchase of securities available-for-sale	(145,429)	(249,934)
Proceeds from calls/maturities of securities held-to-maturity	14,811	24,776
Purchase of securities held-to-maturity		(137,000)
Net increase in loans	(23,194)	(3,712)
Capital expenditures	(364)	(634)
Net cash provided by (used in) investing activities	29,241	(144,367)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in time deposits	22,997	5,973
Net increase in demand, savings, money market and NOW deposits	57,805	61,109
Net proceeds from exercise of stock options	42	127
Cash dividends	(547)	(545)
Net decrease in securities sold under agreements to repurchase	(4,310)	(1,090)
Net decrease in other borrowed funds	(13,000)	(3,000)
Net cash provided by financing activities	62,987	62,574
Net increase (decrease) in cash and cash equivalents	92,502	(76,504)
Cash and cash equivalents at beginning of period	152,283	207,766
Cash and cash equivalents at end of period	244,785	131,262
Cash paid during the period for:
Interest	4,594	5,016
Income taxes	345	190
Change in unrealized gains on securities available-for-sale, net of taxes	(3,116)	1,736
Pension liability adjustment, net of taxes	173	162
Due to broker	$ 10,019	$ 44,423