SCHEDULE IV MORTGAGE LOANS ON REAL ESTATE (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
SCHEDULE IV MORTGAGE LOANS ON REAL ESTATE
Carrying Amount of Mortgage	$ 7,700	$ 8,100
Reconciliation of the carrying amount of mortgage loans at the beginning of the period:
Balance at the beginning of period	8,080	8,087
Collection of principal	(320)	(7)
Loss on repayment	(72)
Balance at the end of period	$ 7,688	$ 8,080
Dearborn, MI
SCHEDULE IV MORTGAGE LOANS ON REAL ESTATE
Interest Rate	6.00%
Periodic Payment Terms	$ 7,688
Face Amount of Mortgage	7,688
Carrying Amount of Mortgage	7,688
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0

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

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- Definition

Total carrying amount of mortgage loans as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
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The carrying amount of the outstanding balance due under the mortgage loan.

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- Definition

The amount of principal collected on mortgage loans on real estate during the reporting period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of the contractual principal due at the origination of the mortgage loan (face amount).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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The stated interest rate on the mortgage loan receivable or the weighted average interest rate on a group of loans.

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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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The amount of reductions in principal on mortgage loans other than foreclosures, costs of mortgages sold, and amortization of premium during the reporting period.

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Amount of principal due on loans that have been delinquent, which may exclude loans having interest delinquent for three months or less, as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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