RELATED PARTY TRANSACTIONS (Details) (USD $)	12 Months Ended
	Dec. 31, 2012 property	Dec. 31, 2011
RELATED PARTY TRANSACTIONS
Area of corporate office (in acres)	50
Lease agreements with related parties | Operating Partnership | Office space subject to lease
RELATED PARTY TRANSACTIONS
Number of offices under lease	6
Total amounts of lease payments incurred	$ 500,000	$ 500,000
Lease agreements with related parties | Operating Partnership | The Parkview Building 6745 Engle Road; and 6751 Engle Road
RELATED PARTY TRANSACTIONS
Approximate Square Footage	21,900
Period of Extension Option (in years)	5
Lease agreements with related parties | Operating Partnership | The Parkview Building 6745 Engle Road; and 6751 Engle Road | Minimum
RELATED PARTY TRANSACTIONS
Fixed rent per month	25,673
Lease agreements with related parties | Operating Partnership | The Parkview Building 6745 Engle Road; and 6751 Engle Road | Maximum
RELATED PARTY TRANSACTIONS
Fixed rent per month	31,205
Lease agreements with related parties | Operating Partnership | 6745 Engle Road Suite 100
RELATED PARTY TRANSACTIONS
Approximate Square Footage	2,212
Period of Extension Option (in years)	5
Lease agreements with related parties | Operating Partnership | 6745 Engle Road Suite 100 | Minimum
RELATED PARTY TRANSACTIONS
Fixed rent per month	3,051
Lease agreements with related parties | Operating Partnership | 6745 Engle Road Suite 100 | Maximum
RELATED PARTY TRANSACTIONS
Fixed rent per month	3,709
Lease agreements with related parties | Operating Partnership | 6745 Engle Road Suite 110
RELATED PARTY TRANSACTIONS
Approximate Square Footage	1,731
Period of Extension Option (in years)	5
Lease agreements with related parties | Operating Partnership | 6745 Engle Road Suite 110 | Minimum
RELATED PARTY TRANSACTIONS
Fixed rent per month	2,387
Lease agreements with related parties | Operating Partnership | 6745 Engle Road Suite 110 | Maximum
RELATED PARTY TRANSACTIONS
Fixed rent per month	2,901
Lease agreements with related parties | Operating Partnership | 6751 Engle Road Suites C and D
RELATED PARTY TRANSACTIONS
Approximate Square Footage	3,000
Period of Extension Option (in years)	5
Lease agreements with related parties | Operating Partnership | 6751 Engle Road Suites C and D | Minimum
RELATED PARTY TRANSACTIONS
Fixed rent per month	3,137
Lease agreements with related parties | Operating Partnership | 6751 Engle Road Suites C and D | Maximum
RELATED PARTY TRANSACTIONS
Fixed rent per month	$ 3,771