Mortgage Servicing Rights

3 Months Ended

Mar. 31, 2013

Mortgage Servicing Rights [Abstract]

Mortgage Servicing Rights

Note 10—Mortgage Servicing Rights

The following tables summarize the activity in, and the main assumptions we used to determine the fair value of mortgage servicing rights for the periods indicated (in thousands):

	Three months ended March 31,
	2013			2012
Mortgage servicing rights:
Balance at beginning of period	$	4,552		$	4,603
Additions		493			550
Change in fair value		(61	)		(369	)
Balance at end of period	$	4,984		$	4,784
Servicing, late and ancillary fees received	$	417		$	372
Balance of loans serviced at:
Beginning of period	$	666,512		$	598,185
End of period	$	680,447		$	615,867
Weighted-average prepayment speed (CPR)		17.3	%		18.4	%
Discount rate		10.0	%		9.0	%

The changes in fair value of MSRs that occurred during the three months ended March 31, 2013 and 2012 were mainly due to changes in principal balances and changes in the estimated life of the MSRs.