Note 10: Deposits (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Deposits	$ 3,071,170		$ 2,808,626
Non-Interest Bearing Demand Deposits
Deposits	521,705		522,805
Interest Bearing Demand And Savings Deposits
Deposits	1,424,881	[1]	1,291,879	[1]
Total Deposits
Deposits	3,071,170		2,808,626
Bank Time Deposits | 0.00% - 0.99%
Deposits	802,532		669,698
Bank Time Deposits | 1.00% - 1.99%
Deposits	245,047		251,118
Bank Time Deposits | 2.00% - 2.99%
Deposits	65,449		61,042
Bank Time Deposits | 3.00% - 3.99%
Deposits	9,424		9,413
Bank Time Deposits | 4.00% - 4.99%
Deposits	1,712		1,852
Bank Time Deposits | 5% and above
Deposits	420		819
Bank Time Deposits | Total Time Deposits
Deposits	$ 1,124,584	[2]	$ 993,942	[2]

[1] (0.19% - 0.20%)

[2] (0.77% - 0.69%)