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v2.4.0.6

Subsequent Events (Details) (USD $) | 3 Months Ended | 6 Months Ended | 1 Months Ended |  | 1 Months Ended |  | 1 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Dec. 31, 2011 | Jun. 30, 2011 | Oct. 31, 2012 Dividend declared, July 2012 | Jul. 31, 2012 Dividend declared, July 2012 | Jul. 31, 2012 Unsecured credit agreement | Jul. 27, 2012 Unsecured credit agreement | Jul. 31, 2012 Unsecured credit agreement LIBOR | Jul. 31, 2012 Unsecured credit agreement Base rate | Jul. 31, 2012 Unsecured credit agreement Maximum | Jul. 27, 2012 Unsecured credit agreement Maximum LIBOR | Jul. 27, 2012 Unsecured credit agreement Maximum Base rate | Jul. 31, 2012 Unsecured credit agreement Minimum | Jul. 27, 2012 Unsecured credit agreement Minimum LIBOR | Jul. 27, 2012 Unsecured credit agreement Minimum Base rate
Subsequent Events |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends declared per common share (in dollars per share) | $ 0.125 | $ 0.125 | $ 0.25 | $ 0.25 | $ 0.25 |  | $ 0.125 |  |  |  |  |  |  |  |  |  |
Cash dividend declared |  |  | $ 12,081,000 | $ 11,810,000 | $ 12,526,000 |  | $ 6,000,000 |  |  |  |  |  |  |  |  |  |
Cash dividends paid per common share (in dollars per share) |  |  |  |  |  | $ 0.125 |  |  |  |  |  |  |  |  |  |  |
Term of credit facility |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |
Revolving credit facility current borrowing capacity |  |  |  |  |  |  |  |  | 300,000,000 |  |  |  |  |  |  |  |
Increase in current borrowing capacity |  |  |  |  |  |  |  | 200,000,000 |  |  |  |  |  |  |  |  |
Maximum borrowing capacity | $ 206,300,000 |  | $ 206,300,000 |  |  |  |  |  | $ 500,000,000 |  |  |  |  |  |  |  |
Credit agreement, annual facility fee (as a percent) |  |  |  |  |  |  |  |  |  |  |  | 0.30% |  |  | 0.15% |  |
Interest rate basis (as a percent) |  |  |  |  |  |  |  |  |  | LIBOR | Base Rate |  |  |  |  |  |
Interest rate spread (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  | 1.45% | 0.45% |  | 0.60% | 0.00%

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