CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($)	Total	Bankers Healthcare Group, LLC	BNC Bancorp	Common Stock	Common Stock Bankers Healthcare Group, LLC	Common Stock BNC Bancorp	Additional Paid-in Capital	Additional Paid-in Capital Bankers Healthcare Group, LLC	Additional Paid-in Capital BNC Bancorp	Retained Earnings	Accumulated Other Comp. Income, net
Balance at Dec. 31, 2015	$ 1,155,611,300			$ 40,906,064			$ 839,617,050			$ 278,573,408	$ (3,485,222)
Balance (in shares) at Dec. 31, 2015				40,906,064
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of employee common stock options and related tax benefits	7,130,496			$ 332,094			6,798,402
Exercise of employee common stock options and related tax benefits (in shares)				332,094
Common dividends paid	(11,717,393)									(11,717,393)
Issuance of restricted common shares, net of forfeitures	0			$ 141,331			(141,331)
Issuance of restricted common shares, net of forfeitures (in shares)				141,331
Common stock issued in conjunction with acquisition	39,694,036	$ 39,687,596			$ 860,470			$ 38,827,126
Common stock issued in conjunction with acquisition (in shares)					860,470
Restricted shares withheld for taxes	(934,018)			$ (55,839)			(878,179)
Restricted shares withheld for taxes (in shares)				(55,839)
Compensation expense for restricted shares	5,244,947						5,244,947
Net income	58,752,036									58,752,036
Other comprehensive income	8,378,846										8,378,846
Balance at Jun. 30, 2016	1,262,153,810			$ 42,184,120			889,468,015			325,608,051	4,893,624
Balance (in shares) at Jun. 30, 2016				42,184,120
Balance at Dec. 31, 2016	1,496,696,112			$ 46,359,377			1,083,490,728			381,072,505	(14,226,498)
Balance (in shares) at Dec. 31, 2016				46,359,377
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of employee common stock options and related tax benefits	3,583,078			$ 183,708			3,399,370
Exercise of employee common stock options and related tax benefits (in shares)				183,708
Common dividends paid	(14,050,051)									(14,050,051)
Issuance of restricted common shares, net of forfeitures	0			$ 259,156			(259,156)
Issuance of restricted common shares, net of forfeitures (in shares)				259,156
Issuance of common equity, net of costs	192,193,750			$ 3,220,000			188,973,750
Issuance of common equity, net of costs (in shares)				3,220,000
Common stock issued in conjunction with acquisition	0		$ 1,847,833,149			$ 27,687,100			$ 1,820,146,049
Common stock issued in conjunction with acquisition (in shares)						27,687,100
Restricted shares withheld for taxes	(4,292,123)			$ (62,829)			(4,229,294)
Restricted shares withheld for taxes (in shares)				(62,829)
Compensation expense for restricted shares	8,633,209						8,633,209
Net income	82,739,568									82,739,568
Other comprehensive income	1,990,147										1,990,147
Balance at Jun. 30, 2017	$ 3,615,326,839			$ 77,646,512			$ 3,100,154,656			$ 449,762,022	$ (12,236,351)
Balance (in shares) at Jun. 30, 2017				77,646,512