Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 (core) capital to RWA	11.90%	12.20%
Dividend restrictions, maximum amount of dividends receivable without regulatory agency approval	$ 80,072
Basel III
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer threshold	2.50%
Capital conservation buffer limit for capital distributions or discretionary bonus payments	2.50%
Common equity tier 1 capital ratio to risk weighted assets	7.00%
Tier 1 (core) capital to RWA	8.50%
Total capital to RWA	10.50%