Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities
Net income (loss)	$ 2,442,000	$ (3,480,000)	$ 3,614,000
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Provision for loan losses	900,000	4,935,000	1,350,000
Loss (gain) on sale of other real estate owned	9,000	(68,000)	10,000
Write down of other real estate owned	1,138,000	2,567,000	130,000
Depreciation and amortization	2,382,000	2,105,000	2,006,000
Deferred income taxes	(142,000)	(304,000)	(225,000)
Stock based compensation	420,000	325,000	370,000
Gain on sale and call of investment securities	(458,000)	(703,000)	(737,000)
Impairment charges on investment securities	7,000	0	34,000
Amortization of premiums on investment securities	540,000	731,000	440,000
Proceeds from sales of SBA loans originated for sale	51,388,000	57,939,000	56,983,000
SBA loans originated for sale	(43,416,000)	(57,450,000)	(50,609,000)
Gains on sales of SBA loans originated for sale	(4,717,000)	(5,338,000)	(5,531,000)
Increase in value of bank owned life insurance		(13,000)	(73,000)
Increase in accrued interest receivable and other assets	(1,117,000)	(363,000)	(222,000)
Net increase (decrease) in accrued interest payable and other liabilities	325,000	(323,000)	(336,000)
Net cash provided by operating activities	9,701,000	560,000	7,204,000
Cash flows from investing activities
Purchase of investment securities available for sale	(78,825,000)	(62,544,000)	(72,464,000)
Proceeds from the sale of securities available for sale	5,700,000	7,946,000	25,784,000
Proceeds from the maturity or call of securities available for sale	25,822,000	32,931,000	33,670,000
Proceeds from the maturity or call of securities held to maturity	2,308,000	48,000	75,000
Net redemption of FHLB stock	413,000	2,246,000	1,505,000
Net increase in loans	(105,256,000)	(63,870,000)	(35,174,000)
Net proceeds from sale of other real estate owned	197,000	2,600,000	334,000
Surrender proceeds on bank owned life insurance		10,503,000
Premises and equipment expenditures	(14,664,000)	(2,877,000)	(475,000)
Net cash used in investing activities	(164,305,000)	(73,017,000)	(46,745,000)
Cash flows from financing activities
Net proceeds from stock offering	44,853,000
Net proceeds from exercise of stock options	975
Net increase in demand, money market and savings deposits	206,163,000	24,731,000	30,297,000
Net decrease in time deposits	(3,467,000)	(44,398,000)	(93,707,000)
Net cash provided by (used in) financing activities	247,550,000	(19,667,000)	(63,410,000)
Net increase (decrease) in cash and cash equivalents	92,946,000	(92,124,000)	(102,951,000)
Cash and cash equivalents, beginning of year	35,880,000	128,004,000	230,955,000
Cash and cash equivalents, end of year	128,826,000	35,880,000	128,004,000
Supplemental disclosures:
Interest paid	4,616,000	4,654,000	7,114,000
Income taxes paid	70,000	235,000
Non-cash transfers from loans to other real estate owned	1,000,000	246,000	2,907,000
Transfer of available-for-sale-securities to held-to-maturity securities	$ 70,118,000