Deposits and Related Interest (Interest expense) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Interest Expense Domestic Deposit Liabilities [Abstract]
Interest Expense, NOW Accounts, Money Market Accounts, and Savings Deposits	$ 11,232	$ 16,287	$ 18,083
Interest Expense Domestic Deposit Liabilities, Certificates of Deposit	20,370	28,372	30,462
Total non interest deposits	$ 31,602	$ 44,659	$ 48,545