DEBT - Schedule (Details) - USD ($)	3 Months Ended	12 Months Ended
Mar. 31, 2017	Dec. 31, 2016
Debt
Total Debt	$ 939,334,000	$ 967,886,000
Mortgages Payable
Debt
Gross debt	505,960,000	532,437,000
Deferred loan costs	(2,262,000)	(2,366,000)
Premiums and discounts	0	722,000
Total Debt	503,698,000	530,793,000
Mortgage loan with a fixed interest of 4.14% per annum, due on July 1, 2026
Debt
Gross debt	$ 392,000,000	392,000,000
Fixed interest rate	4.14%
Amount of balance due on maturity	$ 392,000,000
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	$ 38,941,000	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	$ 29,019,000	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
Secured borrowing principal	26,345,000	27,899,000
Unamortized premiums	1,955,000	2,077,000
Total secured borrowings	28,300,000	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 4.60% and 4.13% at March 31, 2017 and December 31, 2016, respectively.
Debt
Secured borrowing principal	$ 21,838,000	$ 23,122,000
Weighted average rate	4.60%	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 2.08% and 1.83% at March 31, 2017 and December 31, 2016, respectively.
Debt
Secured borrowing principal	$ 4,507,000	$ 4,777,000
Weighted average rate	2.08%	1.83%
Other Debt
Debt
Gross debt	$ 412,070,000	$ 412,070,000
Total Debt	407,336,000	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	$ (1,996,000)	(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	$ (2,738,000)	$ (2,938,000)

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- Definition

For the disposal group, including a component of the entity (discontinued operation), carrying amount of debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper.

+ References

No definition available.

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- Definition

For the disposal group, the amount of debt premium that was originally recognized at acquisition of the instrument that has yet to be amortized.

+ References

No definition available.

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For the disposal group, amount of long-term debt before adjustment for unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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No definition available.

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- Definition

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
-Paragraph 1
-Subparagraph (SX 210.9-03.13,16)
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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
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-Publisher SEC
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-Section 02
-Paragraph 20
-Article 5

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-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
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- Definition

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

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- Definition

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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- Definition

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

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- Definition

The amount of debt discount (net of debt premium) that was originally recognized at the issuance of the instrument that has yet to be amortized.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 45
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- Definition

Weighted average interest rate of debt outstanding.

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For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain.

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