CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Securities held to maturity, fair value (in dollars)	$ 65,949	$ 53,249
Preferred stock, no par value	$ 0	$ 0
Class A Common Stock
Common Stock, no par value	0	0
Class B Common Stock
Common Stock, no par value	$ 0	$ 0