Fair Value Disclosures - Change in Contingent Consideration Liability (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Change in Contingent Consideration Liability [Roll Forward]
Beginning Balance	$ 5,999	$ 5,577
Contingent Consideration from New Acquisition	0	0
Payment of Contingent Consideration	5,284	900
Adjustment of Contingent Consideration	14	280
Ending Balance	729	4,957
Sterner Insurance Associates Inc [Member]
Change in Contingent Consideration Liability [Roll Forward]
Beginning Balance	331	1,144
Contingent Consideration from New Acquisition	0	0
Payment of Contingent Consideration	0	0
Adjustment of Contingent Consideration	0	154
Ending Balance	331	1,298
Girard Partners [Member]
Change in Contingent Consideration Liability [Roll Forward]
Beginning Balance	5,668	4,241
Contingent Consideration from New Acquisition	0	0
Payment of Contingent Consideration	5,284	900
Adjustment of Contingent Consideration	14	119
Ending Balance	$ 398	3,460
John T. Fretz Insurance Agency [Member]
Change in Contingent Consideration Liability [Roll Forward]
Beginning Balance		192
Contingent Consideration from New Acquisition		0
Payment of Contingent Consideration		0
Adjustment of Contingent Consideration		7
Ending Balance		$ 199