Fair Value Disclosures - Change in Contingent Consideration Liability (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Change in Contingent Consideration Liability [Roll Forward]
Beginning Balance	$ 259	$ 339
Contingent Consideration from New Acquisition	0	0
Payment of Contingent Consideration	33	34
Adjustment of Contingent Consideration	9	17
Ending Balance	235	322
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	33	34
Adjustment of Contingent Consideration	9	17
Ending Balance	$ 235	$ 322