Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Oct. 11, 2019	Mar. 31, 2019
Goodwill
Goodwill	$ 167,371	$ 167,420		$ 83,753
BVF/CSNK
Goodwill
Goodwill acquired	13,044
Focus
Goodwill
Goodwill acquired	32,619
Tri Valley Bank
Goodwill
Goodwill acquired	13,819
United American Bank
Goodwill
Goodwill acquired	24,271
Presidio bank
Goodwill
Goodwill			$ 83,618
Goodwill acquired	83,618,000
Banking
Goodwill
Goodwill	154,327			70,709
Factoring
Goodwill
Goodwill	$ 13,044			$ 13,044