Portfolio Loans - Summary of Loans to Executive Officers and Directors (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loans and Leases Receivable, Related Parties [Roll Forward]
Balance at beginning of year	$ 13,513	$ 11,752	$ 16,875
New loans and advances	641	11,796	6,519
Payments and other reductions	(9,760)	(10,035)	(11,642)
Balance at end of year	$ 4,394	$ 13,513	$ 11,752