Fair Value of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011	Dec. 31, 2010
Cash and cash equivalents, carrying amount	$ 156,662	$ 235,962	$ 204,132	$ 138,929
Investment securities, carrying amount	322,789	310,612
Loans, net	680,789	658,611
Accrued interest receivable, carrying amount	6,151	6,125
Assets Carrying Amount	1,166,391	1,211,310
Cash and cash equivalents, fair value	156,662	235,962
Investment securities, fair value	322,789	310,612
Loans, net, fair value	685,323	665,348
Accrued interest receivable, fair value	6,151	6,125
Assets, Fair Value Disclosure	1,170,925	1,218,047
Deposits, carrying amount	511,063	548,368
Accounts and drafts payable, carrying amount	592,819	595,201
Interest Payable, carrying amount	133	159
Liabilities Carrying Value	1,104,015	1,143,728
Deposits, fair value	511,557	548,985
Accounts and drafts payable, fair value	592,819	595,201
Accrued interest payable, fair value	133	159
Liabilities, Fair Value Disclosure	$ 1,104,509	$ 1,144,345

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business and includes carrying value of amounts due on drafts payable on the balance sheet date.

No definition available.