5. Loans (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Loans and Leases Receivable Disclosure [Abstract]
Average recorded investment of impaired loans	$ 56,930	$ 79,395	$ 55,500
Interest recognized while loans were impaired	1,987	2,370	1,100
Troubled debt restructurings included in impaired loans	34,500	56,700
Troubled debt restructurings current with restructured contractual payments	$ 33,600	$ 42,300
Industry concentration risk	We had no concentrations of loans to any single industry in excess of 10% of total loans.	We had no concentrations of loans to any single industry in excess of 10% of total loans