FUTURE MINIMUM LEASE RENTALS (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Future minimum lease rentals
2015	$ 160,089
2016	136,955
2017	125,206
2018	103,680
2019	91,155
Thereafter	297,413
Total	914,498
Governmental Tenants
Future minimum lease rentals
2015	57,327
2016	46,292
2017	41,094
2018	39,091
2019	37,760
Thereafter	117,361
Total	338,925
Other Tenants
Future minimum lease rentals
2015	102,762
2016	90,663
2017	84,112
2018	64,589
2019	53,395
Thereafter	180,052
Total	$ 575,573

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Future minimum rental payments in aggregate as of the balance sheet date under operating leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

+ Details

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- Definition

Future rental payments receivable within one year of the balance sheet date under an operating lease.

+ References

+ Details

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- Definition

Future rental payments receivable within the fifth year from the balance sheet date under an operating lease.

+ References

+ Details

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- Definition

Future rental payments receivable within the fourth year from the balance sheet date under an operating lease.

+ References

+ Details

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- Definition

Future rental payments receivable within the third year from the balance sheet date under an operating lease.

+ References

+ Details

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- Definition

Future rental payments receivable within the second year from the balance sheet date under an operating lease.

+ References

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- Definition

Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date.

+ References

+ Details

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