DEBT - Schedule (Details) - USD ($)	6 Months Ended	12 Months Ended
Jun. 30, 2017	Dec. 31, 2016
Debt
Total Debt	$ 846,833,000	$ 967,886,000
Mortgages Payable
Debt
Gross debt	416,300,000	532,437,000
Deferred loan costs	(1,628,000)	(2,366,000)
Premiums and discounts	0	722,000
Total Debt	414,672,000	530,793,000
Mortgage loan with a fixed interest of 4.14% per annum, due on July 1, 2026
Debt
Gross debt	$ 370,300,000	392,000,000
Fixed interest rate	4.14%
Amount of balance due on maturity	$ 370,300,000
Mortgage loan with a fixed interest of 4.50% per annum, due on January 5, 2027
Debt
Gross debt	$ 46,000,000	46,000,000
Fixed interest rate	4.50%
Period of amortization schedule	10 years
Amount of balance due on maturity	$ 42,008,000
Mortgage loan with a fixed interest of 5.39% per annum, due on March 1, 2021
Debt
Gross debt	0	$ 39,134,000
Fixed interest rate		5.39%
Amount of balance due on maturity		$ 35,695,000
Mortgage loan with a fixed interest of 5.18% per annum, due on June 5, 2021
Debt
Gross debt	0	$ 29,167,000
Fixed interest rate		5.18%
Amount of balance due on maturity		$ 26,232,000
Mortgage loan with a fixed interest of 6.65% per annum, due on July 15, 2018
Debt
Gross debt	0	$ 26,136,000
Fixed interest rate		6.65%
Period of amortization schedule		25 years
Amount of balance due on maturity		$ 21,136,000
Secured Borrowings - Government Guaranteed Loans
Debt
Gross debt	22,964,000	27,899,000
Premiums and discounts	1,638,000	2,077,000
Total Debt	24,602,000	29,976,000
Secured borrowing principal on SBA 7(a) loans sold for a premium and excess spread—variable rate, reset quarterly, based on prime rate with weighted average coupon rate of 4.55% and 4.13% at June 30, 2017 and December 31, 2016, respectively.
Debt
Gross debt	$ 18,504,000	$ 23,122,000
Weighted average rate	4.55%	4.13%
Secured borrowing principal on SBA 7(a) loans sold for excess spread—variable rate, reset quarterly, based on prime rate with weighted average coupon rate of 2.33% and 1.83% at June 30, 2017 and December 31, 2016, respectively.
Debt
Gross debt	$ 4,460,000	$ 4,777,000
Weighted average rate	2.33%	1.83%
Other Debt
Debt
Gross debt	$ 412,070,000	$ 412,070,000
Total Debt	407,559,000	407,117,000
Unsecured term loan facility
Debt
Gross debt	385,000,000	385,000,000
Junior subordinated notes
Debt
Gross debt	27,070,000	27,070,000
Premiums and discounts	$ (1,977,000)	(2,015,000)
Junior subordinated notes \| LIBOR
Debt
Interest rate margin	3.25%
Unsecured credit facilities
Debt
Gross debt	$ 0	0
Unsecured term loan and credit facilities
Debt
Deferred loan costs	$ (2,534,000)	$ (2,938,000)
Disposal Group, Held-for-sale, Not Discontinued Operations \| Mortgage loan with a fixed interest of 4.14% per annum, due on July 1, 2026
Debt
Fixed interest rate	4.14%
Debt, gross	$ 21,700,000
Disposal Group, Held-for-sale, Not Discontinued Operations \| Mortgage loan with a fixed interest of 5.18% per annum, due on June 5, 2021
Debt
Fixed interest rate	5.18%

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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt.

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Amount, after accumulated amortization, of debt discount (premium).

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Weighted average interest rate of debt outstanding.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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