Subsequent Events (Details Textual)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Subsequent Events (Textual) [Abstract]
Granted, shares		0
Subsequent Event [Member]
Subsequent Events (Textual) [Abstract]
Common stock	7,000
Number of key bank officers to whom incentive stock options and non qualified options were awarded	7
Subsequent Event [Member] | Incentive Stock Option Plan [Member]
Subsequent Events (Textual) [Abstract]
Granted, shares	67,500
Subsequent Event [Member] | Non Qualified Stock Option Directors and Key Bank Employee Plan [Member]
Subsequent Events (Textual) [Abstract]
Granted, shares	22,000