Investment Securities: Schedule of Held to Maturity Securities by Contractual Maturity (Details) (After five through ten years, USD $) In Thousands, unless otherwise specified	Jun. 30, 2011
After five through ten years
Held to Maturity Securities Amortized Cost by Contractual Maturity	$ 920
Held to Maturity Securities Fair Value by Contractual Maturity	$ 1,093