Fair Value Disclosures - Change in Contingent Consideration Liability (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Change in Contingent Consideration Liability [Roll Forward]
Beginning Balance	$ 259	$ 339
Contingent Consideration from New Acquisition	0	0
Payment of Contingent Consideration	65	67
Adjustment of Contingent Consideration	17	28
Ending Balance	211	300
Girard Partners [Member]
Change in Contingent Consideration Liability [Roll Forward]
Beginning Balance	259	339
Contingent Consideration from New Acquisition	0	0
Payment of Contingent Consideration	65	67
Adjustment of Contingent Consideration	17	28
Ending Balance	$ 211	$ 300