|
Debt (Details) (USD $)
|
3 Months Ended |
0 Months Ended |
|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
Apr. 20, 2015
|
Dec. 31, 2014
|
| Debt |
|
|
|
|
| Carrying Value |
$ 1,999,622,000 |
|
|
$ 1,920,057,000 |
| Interest costs capitalized |
2,100,000 |
1,600,000 |
|
|
| Wholly owned subsidiary |
|
|
|
|
| Debt |
|
|
|
|
| Debt Instrument, Debt Default, Amount |
150,000,000.0 |
|
|
|
| Mortgage and Other Secured Loans: |
|
|
|
|
| Debt |
|
|
|
|
| Carrying Value |
422,361,000 |
|
|
424,016,000 |
| Fixed rate mortgage loans |
|
|
|
|
| Debt |
|
|
|
|
| Carrying Value |
385,693,000 |
|
|
387,139,000 |
| Stated interest rates, low end of range (as a percent) |
3.96% |
|
|
|
| Stated interest rates, high end of range (as a percent) |
10.65% |
|
|
|
| Unamortized premium included in carrying value |
36,000 |
|
|
42,000 |
| Weighted average interest rate (as a percent) |
8.11% |
|
|
|
| Debt, Weighted Average Interest Rate, Excluding Incremental Rate On Default Rate |
6.16% |
|
|
|
| Fixed rate mortgage loans | Maximum |
|
|
|
|
| Debt |
|
|
|
|
| Interest rate excluding incremental rate on default rate (percent) |
7.87% |
|
|
|
| Variable rate secured loans |
|
|
|
|
| Debt |
|
|
|
|
| Carrying Value |
36,668,000 |
|
|
36,877,000 |
| Description of variable rate basis |
LIBOR |
|
|
|
| Stated interest rate (as a percent) |
2.42% |
|
|
|
| Variable rate secured loans | London Interbank Offered Rate (LIBOR) [Member] |
|
|
|
|
| Debt |
|
|
|
|
| Variable rate, spread (as a percent) |
2.25% |
|
|
|
| Variable rate secured loans | Revolving Credit Facility |
|
|
|
|
| Debt |
|
|
|
|
| Weighted average interest rate (as a percent) |
1.45% |
|
|
|
| Revolving Credit Facility |
|
|
|
|
| Debt |
|
|
|
|
| Carrying Value |
164,000,000 |
|
|
83,000,000 |
| Description of variable rate basis |
LIBOR |
|
|
|
| Revolving Credit Facility | Minimum | London Interbank Offered Rate (LIBOR) [Member] |
|
|
|
|
| Debt |
|
|
|
|
| Variable rate, spread (as a percent) |
0.975% |
|
|
|
| Revolving Credit Facility | Maximum | London Interbank Offered Rate (LIBOR) [Member] |
|
|
|
|
| Debt |
|
|
|
|
| Variable rate, spread (as a percent) |
1.75% |
|
|
|
| Revolving Credit Facility | Revolving Credit Facility |
|
|
|
|
| Debt |
|
|
|
|
| Maximum Availability |
800,000,000 |
|
|
|
| Term Loan Facilities |
|
|
|
|
| Debt |
|
|
|
|
| Carrying Value |
520,000,000 |
|
|
520,000,000 |
| Description of variable rate basis |
LIBOR |
|
|
|
| Weighted average interest rate (as a percent) |
1.82% |
|
|
|
| Additional borrowing capacity available provided there is no default under the agreement |
330,000,000 |
|
|
|
| Term Loan Facilities | Minimum | London Interbank Offered Rate (LIBOR) [Member] |
|
|
|
|
| Debt |
|
|
|
|
| Variable rate, spread (as a percent) |
1.10% |
|
|
|
| Term Loan Facilities | Maximum | London Interbank Offered Rate (LIBOR) [Member] |
|
|
|
|
| Debt |
|
|
|
|
| Variable rate, spread (as a percent) |
2.60% |
|
|
|
| 3.60% Senior Notes | Unsecured senior notes |
|
|
|
|
| Debt |
|
|
|
|
| Carrying Value |
347,560,000 |
|
|
347,496,000 |
| Stated interest rate (as a percent) |
3.60% |
|
|
|
| Interest rate on debt (as a percent) |
3.70% |
|
|
|
| Debt instrument, face amount |
350,000,000 |
|
|
|
| Unamortized discount included in carrying value |
2,400,000 |
|
|
2,500,000 |
| 5.250% Senior Notes | Unsecured senior notes |
|
|
|
|
| Debt |
|
|
|
|
| Carrying Value |
245,888,000 |
|
|
245,797,000 |
| Stated interest rate (as a percent) |
5.25% |
|
|
|
| Interest rate on debt (as a percent) |
5.49% |
|
|
|
| Debt instrument, face amount |
250,000,000 |
|
|
|
| Unamortized discount included in carrying value |
4,100,000 |
|
|
4,200,000 |
| 3.70% Senior Notes | Unsecured senior notes |
|
|
|
|
| Debt |
|
|
|
|
| Carrying Value |
297,655,000 |
|
|
297,569,000 |
| Stated interest rate (as a percent) |
3.70% |
|
|
|
| Interest rate on debt (as a percent) |
3.85% |
|
|
|
| Debt instrument, face amount |
300,000,000 |
|
|
|
| Unamortized discount included in carrying value |
2,300,000 |
|
|
2,400,000 |
| Unsecured notes payable |
|
|
|
|
| Debt |
|
|
|
|
| Carrying Value |
1,583,000 |
|
|
1,607,000 |
| Stated interest rate (as a percent) |
0.00% |
|
|
|
| Unamortized discount included in carrying value |
628,000 |
|
|
654,000 |
| 4.25% Exchangeable Senior Notes |
|
|
|
|
| Debt |
|
|
|
|
| Carrying Value |
575,000 |
|
|
572,000 |
| Stated interest rate (as a percent) |
4.25% |
|
|
|
| Interest rate on debt (as a percent) |
6.05% |
|
|
|
| Unamortized discount included in carrying value |
|
|
|
3,000 |
| Exchange rate per $1000 principal amount (in common shares) |
20.8513 |
|
|
|
| Convertible debt principal amount, basis for exchange |
1,000 |
|
|
|
| Exchange price per common share based on exchange rate (in dollars per share) |
$ 47.96 |
|
|
|
| Principal amount of debt |
|
|
|
$ 575,000 |
| 4.25% Exchangeable Senior Notes | Subsequent Event |
|
|
|
|
| Debt |
|
|
|
|
| Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed |
|
|
100.00% |
|
| Debt in default of payment terms | Wholly owned subsidiary |
|
|
|
|
| Debt |
|
|
|
|
| Stated interest rate (as a percent) |
10.65% |
|
|
|
| Debt in default of payment terms | Wholly owned subsidiary | Northern Virginia |
|
|
|
|
| Debt |
|
|
|
|
| Number of real estate properties |
2 |
|
|
|