Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating Activities
Net income	$ 19,543	$ 12,797	$ 10,455
Items not requiring (providing) cash
Provision for loan losses	3,524	5,282	11,554
Depreciation and amortization	2,875	2,520	2,320
Share based compensation	33	35	30
Issuance of restricted stock	115	60	34
Mortgage servicing rights impairment	168	53	664
Premium amortization on securities available for sale, net	3,344	2,311	1,946
Gain on sale of investment securities	(2)	(1,777)	(533)
Gain on sale of mortgage loans	(14,123)	(6,449)	(7,538)
Proceeds from sales of loans	401,068	282,306	286,960
Loans originated for sale	(386,945)	(275,857)	(281,705)
Change in cash value of life insurance	(990)	5	(770)
(Gain) loss on sale of other real estate owned	129	206	(393)
Net change in
Interest receivable	(225)	(152)
Interest payable	(126)	(185)	(354)
Other assets	1,030	286	183
Other liabilities	(3,072)	971	2,057
Net cash provided by operating activities	26,346	22,412	24,910
Investing Activities
Purchases of securities available for sale	(113,945)	(193,494)	(203,840)
Proceeds from sales, maturities, calls, and principal repayments of securities available for sale	125,071	155,343	204,647
Purchase of securities held to maturity		(9,437)	(24,732)
Proceeds from maturities of securities held to maturity	7,100	12,837	11,167
Proceeds from the sale of Federal Home Loan Bank stock		1,274	861
Net change in loans	(102,580)	(105,678)	32,577
Proceeds on the sale of OREO and repossessed assets	4,672	2,424	6,137
Purchases of premises and equipment	(6,984)	(2,442)	(2,414)
Purchases of bank owned life insurance		(3,000)
Acquisition of Heartland	26,283
Purchases and assumption of ATSB			3,412
Net cash (provided by) used in by investing activities	(60,383)	(142,173)	27,815
Net change in
Deposits	73,042	24,367	(64,227)
Borrowings	(25,415)	109,462	(31,979)
Redemption of preferred stock		(18,750)	(6,250)
Issuance of preferred stock		12,500
Proceeds from issuance of stock	226	63	197
Dividends paid on common shares	(3,047)	(2,325)	(2,240)
Dividends paid on preferred shares	(481)	(792)	(1,245)
Net cash provided by (used in) financing activities	44,325	124,525	(105,744)
Net Change in Cash and Cash Equivalent	10,288	4,764	(53,019)
Cash and Cash Equivalents, Beginning of Period	20,447	15,683	68,702
Cash and Cash Equivalents, End of Period	30,735	20,447	15,683
Additional Cash Flows Information
Interest paid	14,358	16,686	21,228
Income taxes paid	8,125	2,700	3,880
Transfer of loans to other real estate owned	$ 5,899	$ 4,787	$ 9,026