Condensed Parent Information (Details 2) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 1,509,712	$ 1,832,655
Adjustments to reconcile net income to net cash used in operating activities:
Other	(1,200,552)	(2,580,725)
Net cash used in operating activities	2,341,425	1,688,083
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from issuance of common stock	4,043,011	34,662
Payment of dividends on preferred stock	(120,000)	(120,000)
Net cash provided by (used in) financing activities	38,824,705	22,299,585
CASH FLOWS FROM INVESTING ACTIVITIES
Net cash used in investing activities	(7,937,911)	(56,686,592)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	33,228,219	(32,698,924)
CASH AND CASH EQUIVALENTS, beginning of year	46,736,414	79,435,338
CASH AND CASH EQUIVALENTS, end of year	79,964,633	46,736,414
Parent [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	1,510,000	1,833,000
Adjustments to reconcile net income to net cash used in operating activities:
Equity in undistributed income of subsidiary	(2,993,000)	(2,178,000)
Other	(247,000)	5,000
Net cash used in operating activities	(1,730,000)	(340,000)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from issuance of note payable	6,000,000	0
Repayment of note payable	(4,000,000)	0
Proceeds from issuance of common stock	4,043,000	34,000
Payment of dividends on preferred stock	(120,000)	(120,000)
Net cash provided by (used in) financing activities	5,923,000	(86,000)
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisition of Cornerstone Bancshares, Inc.	(4,166,000)	0
Net cash used in investing activities	(4,166,000)	0
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	27,000	(426,000)
CASH AND CASH EQUIVALENTS, beginning of year	476,000	902,000
CASH AND CASH EQUIVALENTS, end of year	$ 503,000	$ 476,000