CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2014		Dec. 31, 2013
ASSETS
Securities held-to-maturity, fair value	$ 38,788,870	[1]	$ 38,817,467
Stockholders' equity:
Preferred stock, par value (in dollars per share)	$ 0		$ 0
Preferred stock, shares authorized (in shares)	10,000,000		10,000,000
Preferred stock, shares issued (in shares)	0		0
Preferred stock, shares outstanding (in shares)	0		0
Common stock, par value (in dollars per share)	$ 1.00		$ 1.00
Common stock, shares authorized (in shares)	90,000,000		90,000,000
Common stock, shares issued (in shares)	35,732,483		35,221,941
Common stock, shares outstanding (in shares)	35,732,483		35,221,941

[1] Estimated fair values are consistent with an exit-price concept. The assumptions used to estimate the fair values are intended to approximate those that a market-participant would realize in a hypothetical orderly transaction.