Intangible Assets - Servicing Assets (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended			12 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Minimum	Dec. 31, 2013 Minimum	Jun. 30, 2014 Maximum	Dec. 31, 2013 Maximum
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Balance at beginning of period	$ 9,123	$ 7,645	$ 8,915	$ 6,260
Additions through originations of servicing assets	858	921	1,672	1,558
Additions through acquisition of PIB	0	0	0	1,102
Amortization	(957)	(488)	(1,563)	(842)
Balance at end of period	$ 9,024	$ 8,078	$ 9,024	$ 8,078
Weighted-average discount rate					5.47%	5.49%	5.73%	5.73%
Constant prepayment rate					8.90%	9.20%	12.50%	13.00%