Fair Value Disclosures - Change in Contingent Consideration Liability (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Change in Contingent Consideration Liability [Roll Forward]
Beginning balance	$ 160	$ 259
Contingent consideration from new acquisition	0	0
Payment of contingent consideration	61	65
Adjustment of contingent consideration	10	17
Ending balance	109	211
Girard Partners [Member]
Change in Contingent Consideration Liability [Roll Forward]
Beginning balance	160	259
Contingent consideration from new acquisition	0	0
Payment of contingent consideration	61	65
Adjustment of contingent consideration	10	17
Ending balance	$ 109	$ 211