SECURITIES, Amortized Cost and Fair Value of Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Available for Sale, Amortized Cost [Abstract]
Within 1 year	$ 5,760
After 1 year through 5 years	1,246
After 5 years through 10 years	20,825
After 10 years	223,930
Other	449,089
Amortized cost	700,850	$ 706,437
Available for Sale, Fair Value [Abstract]
Within 1 year	5,800
After 1 year through 5 years	1,343
After 5 years through 10 years	21,658
After 10 years	230,820
Other	466,708
Fair value	$ 726,329	$ 707,650

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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