Fair Value Disclosures - Change in Contingent Consideration Liability (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Change in Contingent Consideration Liability [Roll Forward]
Beginning balance	$ 160	$ 259
Contingent consideration from new acquisition	0	0
Payment of contingent consideration	91	97
Adjustment of contingent consideration	14	24
Ending balance	83	186
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	91	97
Adjustment of contingent consideration	14	24
Ending balance	$ 83	$ 186