Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Income Taxes [Line Items]
Income tax expense	$ 3,429	$ 6,350	$ 5,875	$ 7,742
Pre-tax income	9,113	17,275	8,223	21,289
Unrecognized tax benefits that would impact effective tax rate	200	$ 500	200	$ 500
Unrecognized tax benefits	200		200
Maximum
Income Taxes [Line Items]
Amount of accrued interest expense included as a liability within the Company's Condensed Consolidated Statements of Financial Position	$ 100		$ 100		$ 100