Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating Activities:
Net Income	$ 6,251	$ 6,190
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Provision for Credit Losses	0	220
Depreciation and Amortization	395	441
Net Amortization of Investment Security Premiums & Discounts	957	825
Net Gain on Sale of Investment Securities	(735)	0
Net Change in Operating Assets & Liabilities:
Net (Increase) Decrease in Interest Receivable and Other Assets	(5,322)	7,733
Net (Decrease) Increase in Interest Payable and Other Liabilities	(1,037)	1,392
Net Cash Provided by Operating Activities	509	16,801
Investing Activities:
Purchase of Investment Securities Available-for-Sale	(219,545)	(98,147)
Proceeds from Sold, Matured or Called Securities Available-for-Sale	119,128	46,706
Purchase of Investment Securities Held-to-Maturity	(115)	(4,144)
Proceeds from Matured or Called Securities Held-to-Maturity	790	814
Net Loans Paid, Originated or Acquired	20,172	4,464
Principal Collected on Loans Previously Charged Off	73	36
Additions to Premises and Equipment	(45)	(134)
Net Cash Used by Investing Activities	(79,542)	(50,405)
Financing Activities:
Net (Decrease) Increase in Deposits	(6,860)	17,845
Net Changes in Other Borrowings	0	(16)
Common Stock Repurchases	0	(180)
Net Cash (Used) Provided by Financing Activities	(6,860)	17,649
Decrease in Cash and Cash Equivalents	(85,893)	(15,955)
Cash and Cash Equivalents at Beginning of Period	129,426	101,660
Cash and Cash Equivalents at End of Period	$ 43,533	$ 85,705