Deposits - Additional Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Type of Deposit [Line Items]
Brokered deposit placement fee	$ 2,472	$ 2,379	$ 5,222	$ 4,879
Time Deposits, $100,000 or More	258,463		258,463		159,637
Interest Payable, Current	10,167		10,167		13,097
Interest expense on deposit with subsidiary	66	85	117	192
Deposit with subsidiary	655,805		655,805		293,040
Upromise
Type of Deposit [Line Items]
Deposit with subsidiary	287,780		287,780		293,040
Parent Company
Type of Deposit [Line Items]
Deposit with subsidiary	$ 368,025		$ 368,025		$ 0