Acquisition of South Pacific Financial Corporation - Summary of Assets and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Receivables	$ 16,086	$ 13,502
Goodwill	123,695	123,695
Other assets	38,889	36,971
Total assets	2,946,122	2,929,774
Accounts payable	114,026	128,371
Accrued expenses	122,871	150,155
Total liabilities	1,919,720	$ 1,915,447
South Pacific Financial Corporation [Member]
Business Acquisition [Line Items]
Receivables	1,908
Mortgage Held For Sale	17,597
Derivative, Fair Value, Net	1,519
Goodwill	4,500
Other assets	1,426
Total assets	26,950
Accounts payable	206
Accrued expenses	3,053
Warehouse facilities	14,791
Total liabilities	18,050
Net assets acquired	$ 8,900