Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Cash flow from operating activities
Net income	$ 42,627		$ 45,436		$ 40,240
Adjustments to reconcile net income to cash provided by operating activities
Depreciation and amortization	10,212		9,634		9,880
Provision for loan losses	18,056		11,482		18,655
Deferred income tax expense (benefit)	(1,919)		91		(2,494)
Net gain on sale of investments	(5)		(723)		(458)
Loss on write-down of investments in securities available for sale	76		243		334
(Gain) loss on sale of fixed assets	(30)		353		280
Impairment of goodwill	2,227	[1]		[1]		[1]
Gain resulting from early termination of a hedging relationship	(22)
Loss on sale of other real estate owned and foreclosed assets	996		1,562		367
Realized gain on sale leaseback transaction	(1,034)		(1,034)		(1,034)
Stock based compensation	2,845		2,483		1,666
Increase in cash surrender value of life insurance policies	(3,114)		(3,159)		(3,192)
Gains realized on life insurance policies	(1,307)
Change in fair value on loans held for sale	141		(856)		593
Net change in
Trading assets	(265)		(643)		(1,426)
Loans held for sale	(27,828)		8,273		(15,044)
Other assets	(4,380)		(32,482)		(15,608)
Other liabilities	4,408		14,871		13,894
Total adjustments	(943)		10,095		6,413
Net cash provided by operating activities	41,684		55,531		46,653
Cash flows used in investing activities
Proceeds from sales of securities available for sale	2,101		14,639		6,423
Proceeds from maturities and principal repayments of securities available for sale	101,808		108,312		173,608
Purchases of securities available for sale	(93,647)		(50,975)		(46,349)
Proceeds from maturities and principal repayments of securities held to maturity	59,887		44,090		22,570
Purchases of securities held to maturity	(34,239)		(47,343)		(132,331)
Redemption of Federal Home Loan Bank stock	2,290
Proceeds from life insurance policies	3,280
Purchases of life insurance policies	(267)		(267)		(267)
Net increase in loans	(297,394)		(256,282)		(187,374)
Cash used in business combinations, net of cash acquired	(8,965)		(457)		(269)
Purchase of bank premises and equipment	(6,263)		(8,317)		(7,022)
Proceeds from the sale of bank premises and equipment	67		496		37
Proceeds resulting from early termination of a hedging relationship	22
Proceeds from the sale of other real estate owned and foreclosed assets	5,649		6,276		7,190
Net cash used in investing activities	(265,671)		(189,828)		(163,784)
Cash flows provided by financing activities
Net decrease in time deposits	(21,074)		(63,014)		(224,605)
Net increase in other deposits	333,488		312,060		477,094
Net (decrease) increase in federal funds purchased and assets sold under repurchase agreements	(12,769)		48,009		(22,333)
Net decrease in short term Federal Home Loan Bank advances and other borrowings	(53,053)		(5,000)		(10,000)
Net decrease in long term Federal Home Loan Bank advances	(24,991)		(67,144)		(50,000)
Net (decrease) increase in treasury tax & loan notes			(3,044)		892
Proceeds from exercise of stock options, net of cash paid	1,108		4,127		743
Restricted shares surrendered	(467)		(361)		(114)
Tax benefit from equity award activity and deferred compensation	518		100		68
Proceeds from shares issued under direct stock purchase plan	1,691		824
Common dividends paid	(22,494)		(16,038)		(15,237)
Net cash provided by financing activities	201,957		210,519		156,508
Net (decrease) increase in cash and cash equivalents	(22,030)		76,222		39,377
Cash and cash equivalents at beginning of year	237,504		161,282		121,905
Cash and cash equivalents at end of year	215,474		237,504		161,282
Cash paid during the year for
Interest on deposits and borrowings	23,205		29,659		38,528
Income taxes	11,059		18,962		12,627
Supplemental schedule of noncash investing and financing activities
Transfer of loans to foreclosed assets	7,061		6,285		10,836
In conjunction with the purchase acquisition detailed in note 2 to the consolidated financial statements, assets were acquired and liabilities were assumed as follows
Common stock issued for acquisition	30,389
Fair value of assets acquired, net of cash acquired	547,219
Fair value of liabilities assumed	$ 507,865

[1] Amount represents the total amount of goodwill relating to Compass Exchange Advisors, LLC, which was acquired in January 2007.