Maturity of Certificates of Deposit (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
$100,000 and Over [Abstract]
Less than 1 Year	$ 232,805
Greater than 1 year and less than 2 years	35,780
Greater than 2 years and less than 3 years	77,018
Greater than 3 years and less than four years	48,839
Greater than 4 years and less than 5 years	2,454
Over 5 years	0
Time Deposits, $100,000 or More	396,896	550,535
Total [Abstract]
Less than 1 year	334,424
Greater than 1 year and less than 2 years	69,009
Greater than 2 years and less than 3 years	103,106
Greater than 3 years and less than 4 years	69,921
Greater than 4 years and less than 5 years	3,152
Over 5 years	98
Time Deposits	579,710
Other [Abstract]
Less than 1 year	101,619
Greater than 1 year and less than 2 years	33,229
Greater than 2 years and less than 3 years	26,088
Greater than 3 years and less than 4 years	21,082
Greater than 4 years and less than 5 years	698
Over 5 years	98
Time Deposits, Less than $100,000	$ 182,814	$ 266,386