REPURCHASE AGREEMENTS AND REVERSE REPURCHASE AGREEMENTS (Narrative) (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Assets Sold under Agreements to Repurchase [Line Items]
Restricted Cash And Cash Equivalents At Carrying Value	$ 60,761,000	$ 84,885,000
Reverse Repurchase Agreements	139,738,000	0
Securities Borrowed	139,843,000	0
Repurchase Agreement [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Aggregate amount at risk with all counterparties	164,200,000
Restricted Cash And Cash Equivalents At Carrying Value	35,609,000	$ 65,851,000
Reverse Repurchase Agreement [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Reverse Repurchase Agreements	139,700,000
Securities Borrowed	$ 139,800,000