Mortgage Servicing Rights (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2013
Changes in mortgage servicing rights
Carrying value at the beginning of the period	$ 4,233
Capitalization	3,278
Amortization	(330)
Carrying value at the end of the period	$ 7,181

The periodic amortization (in proportion to and over the period of estimated net servicing income or loss) of capitalized servicing rights, which contractually entitle the servicer to receive fees and ancillary revenues for performing billing, collection, disbursement and recordkeeping services in connection with a mortgage portfolio. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amortized carrying amount (balance) as of the balance sheet date of an asset representing net future revenues from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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