Operating Segments and Related Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Operating Segments and Related Information
Number of reportable segments | segment			3
Number of operating segments | segment			3
Goodwill	$ 311,536		$ 311,536		$ 311,536
Total Assets	10,835,965		10,835,965		9,695,729
Net interest income	70,813	$ 73,428	140,246	$ 141,811
Non-interest income:	27,964	27,896	55,481	53,841
Non-interest expense:	53,068	68,020	113,582	125,183
Income before income taxes	32,818	30,787	52,038	65,841
Net income:	25,806	24,085	41,170	49,554
Operating segments | Banking
Operating Segments and Related Information
Goodwill	288,436		288,436		288,436
Total Assets	10,765,956		10,765,956		9,632,368
Net interest income	73,318	75,944	144,891	146,582
Non-interest income:	14,026	15,659	27,194	28,442
Non-interest expense:	41,659	56,895	90,174	102,066
Income before income taxes	32,794	32,191	51,804	68,330
Net income:	25,985	24,441	40,909	51,106
Operating segments | Remittance Processing
Operating Segments and Related Information
Goodwill	8,992		8,992		8,992
Total Assets	45,334		45,334		44,209
Net interest income	19	18	38	36
Non-interest income:	3,962	4,117	8,031	8,298
Non-interest expense:	3,243	2,589	6,146	5,353
Income before income taxes	738	1,546	1,923	2,981
Net income:	528	1,105	1,388	2,130
Operating segments | Wealth Management
Operating Segments and Related Information
Goodwill	14,108		14,108		14,108
Total Assets	40,361		40,361		32,760
Non-interest income:	10,310	9,594	22,019	18,727
Non-interest expense:	6,254	5,749	13,228	11,313
Income before income taxes	4,056	3,845	8,791	7,414
Net income:	3,082	2,845	6,681	5,486
Other
Operating Segments and Related Information
Total Assets	(15,686)		(15,686)		$ (13,608)
Net interest income	(2,524)	(2,534)	(4,683)	(4,807)
Non-interest income:	(334)	(1,474)	(1,763)	(1,626)
Non-interest expense:	1,912	2,787	4,034	6,451
Income before income taxes	(4,770)	(6,795)	(10,480)	(12,884)
Net income:	$ (3,789)	$ (4,306)	$ (7,808)	$ (9,168)