10. Borrowed Funds (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012		Sep. 30, 2012
Debt Disclosure [Abstract]
Long-term borrowings	$ 163,540	$ 203,268		$ 203,744
Average interest rate paid on long-term borrowings	3.89%			3.92%
Subordinated debentures	16,800	16,800	[1]	16,800
Subordinated debentures owed to unconsolidated subsidiary trusts	$ 19,589	$ 19,589	[1]	$ 19,589

[1] December 31, 2012 financial information has been extracted from audited consolidated financial statements