Commitments and Contingencies (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) branch_office	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Number of offices under which the company is the primary lessee | branch_office	8
Branch closure obligation	$ 657	$ 1,074
Rental expense	$ 1,100	$ 800	$ 800
Employment agreements, contract term	1 year