|
Properties, net (Details 4) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | 0 Months Ended | 12 Months Ended | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2013
Tenant relationship value
|
Dec. 31, 2013
In-place lease value
|
Dec. 31, 2013
Above-market leases
|
Jul. 11, 2012
13857 McLearen Road
sqft
|
Jul. 11, 2012
13857 McLearen Road
Tenant relationship value
|
Jul. 11, 2012
13857 McLearen Road
In-place lease value
|
Jul. 11, 2012
13857 McLearen Road
Above-market leases
|
Dec. 31, 2013
Newly-constructed properties placed in service
sqft
Property
|
Dec. 31, 2012
Newly-constructed properties placed in service
sqft
Property
|
Dec. 31, 2012
Newly-constructed properties placed in service
Northern Virginia
Property
|
Dec. 31, 2012
Newly-constructed properties placed in service
Baltimore and Washington Corridor
Property
|
Dec. 31, 2012
Newly-constructed properties placed in service
Greater Baltimore
Property
|
Dec. 31, 2013
Properties under construction or contractually committed for construction
sqft
Property
|
Dec. 31, 2013
Properties under construction or contractually committed for construction
Northern Virginia
Property
|
Dec. 31, 2013
Properties under construction or contractually committed for construction
Huntsville
Property
|
Dec. 31, 2013
Properties under construction or contractually committed for construction
Baltimore and Washington Corridor
Property
|
Dec. 31, 2013
Properties under construction or contractually committed for construction
San Antonio
Property
|
Dec. 31, 2013
Properties under redevelopment
sqft
Property
|
Dec. 31, 2013
Properties under redevelopment
Baltimore and Washington Corridor
Property
|
Dec. 31, 2013
Properties under redevelopment
Greater Philadelphia
Property
|
|
| Acquisitions | ||||||||||||||||||||||
| Square Feet of Properties Placed in Service | 812,000 | 371,000 | ||||||||||||||||||||
| Number of Real Estate Properties Placed In Service | 8 | 4 | ||||||||||||||||||||
| Number of real estate properties | 1 | 2 | 1 | 7 | 3 | 1 | 2 | 1 | 3 | 1 | 2 | |||||||||||
| Square footage of real estate properties (in square feet) | 202,000 | 1,000,000 | 376,000 | |||||||||||||||||||
| Acquisitions | ||||||||||||||||||||||
| Acquired property, percentage leased (as a percent) | 100.00% | |||||||||||||||||||||
| Land, operating properties | $ 3,507 | |||||||||||||||||||||
| Building and improvements | 30,177 | |||||||||||||||||||||
| Intangible assets on real estate acquisitions | 14,993 | |||||||||||||||||||||
| Total assets | 48,677 | |||||||||||||||||||||
| Below market leases | (369) | |||||||||||||||||||||
| Total acquisition costs | 48,308 | |||||||||||||||||||||
| Intangible assets on real estate acquisitions | ||||||||||||||||||||||
| Gross carrying amount | 14,993 | 7,472 | 7,109 | 412 | ||||||||||||||||||
| Weighted average amortization period of intangible assets | 10 years | 7 years | 6 years | 3 years | 7 years | 10 years | 5 years | 5 years | ||||||||||||||
| Costs expensed in connection with acquisition of operating properties | $ 229 | |||||||||||||||||||||