CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Securities held to maturity, fair value	$ 50,768	$ 46,416
Preferred stock, no par value	$ 0	$ 0
Preferred stock, shares authorized	100,000	100,000
Non cumulative convertible preferred stock (as a percent)	8.50%	8.50%
Preferred stock, issued	0	0
Class A Common Stock
Common Stock, no par value	$ 0	$ 0
Common Stock, shares authorized	30,000,000	30,000,000
Common Stock, issued	18,541,284	18,694,315
Common Stock, outstanding	18,541,284	18,694,315
Class B Common Stock
Common Stock, no par value	$ 0	$ 0
Common Stock, shares authorized	5,000,000	5,000,000
Common Stock, issued	2,259,926	2,270,952
Common Stock, outstanding	2,259,926	2,270,952