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Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Parent Company Statements (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Activities
Net income	$ 6,355us-gaap_NetIncomeLoss	$ 7,069us-gaap_NetIncomeLoss	$ 5,689us-gaap_NetIncomeLoss	$ 5,179us-gaap_NetIncomeLoss	$ 5,088us-gaap_NetIncomeLoss	$ 5,479us-gaap_NetIncomeLoss	$ 6,109us-gaap_NetIncomeLoss	$ 5,559us-gaap_NetIncomeLoss	$ 24,292us-gaap_NetIncomeLoss	$ 22,235us-gaap_NetIncomeLoss	$ 18,664us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Net cash provided by (used in) operating activities									30,065	39,363	31,910
Investing activities:
Sale of available-for-sale securities									14,913	4,027	72,262
Net cash provided by investing activities									(103,662)	(69,872)	(24,172)
Financing activities:
Repurchase of common stock									(15,519)	(1,821)	0
Stock Options Exercised									921	350	4
Treasury stock sales									76us-gaap_ProceedsFromSaleOfTreasuryStock	64us-gaap_ProceedsFromSaleOfTreasuryStock	14us-gaap_ProceedsFromSaleOfTreasuryStock
Net cash used in financing activities									7,215	72,995	(45,837)
Net increase (decrease) in cash and cash equivalents									(66,382)	42,486	(38,099)
Parent Company [Member]
Operating Activities
Net income									24,292	22,235	18,664
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Distribution in excess of (undistributed equity in) earnings of subsidiaries									(3,053)	(18,755)	17,333
Change in other assets and liabilities									59	176	97
Net cash provided by (used in) operating activities									21,298	3,656	36,094
Investing activities:
Investment in non-bank subsidiary									0	0	(250)
Sale of available-for-sale securities									0	1,002	1,000
Net cash provided by investing activities									0	1,002	750
Financing activities:
Repurchase of common stock									(15,519)	(1,821)	0
Cash dividends paid									(5,937)	(3,907)	(3,086)
Stock Options Exercised									921	350	4
Treasury stock sales									76	64	14
Preferred Stock payoff									0	0	(36,358)
Net cash used in financing activities									(20,459)	(5,314)	(39,426)
Net increase (decrease) in cash and cash equivalents									839	(656)	(2,582)
Cash and cash equivalents at beginning of year				8,228				8,884	8,228	8,884	11,466
Cash and cash equivalents at end of year	$ 9,067				$ 8,228				$ 9,067	$ 8,228	$ 8,884