|
Summary of Significant Accounting Policies- Derivative Financial Instruments (Details) (Interest rate swap instruments, USD $)
In Thousands, unless otherwise specified |
12 Months Ended | 1 Months Ended | 3 Months Ended | 1 Months Ended | 1 Months Ended | ||||
|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2007
contract
|
Dec. 31, 2007
Interest Rate Swap Contract 1
|
Dec. 31, 2007
Interest Rate Swap Contract 2
|
Mar. 31, 2010
Interest Rate Swap Contract 3
|
Jun. 30, 2014
Interest Rate Swap Contract 3
|
Jul. 31, 2011
Interest Rate Swap Contract 4
|
Oct. 31, 2012
Interest Rate Swap Contract 5
swap
|
Sep. 30, 2013
Interest Rate Swap Contract 5
|
Oct. 31, 2012
Interest Rate Swap Contract 6
swap
|
|
| Derivative [Line Items] | |||||||||
| Number of instruments held (contracts) | 2 | 2 | 2 | ||||||
| Term of interest rate swap contract | 15 years | 14 years | 5 years | 8 years | 8 years | ||||
| Initial notional amount of interest rate swaps | $ 13,081 | $ 3,256 | $ 27,900 | $ 38,571 | $ 16,750 | $ 25,377 | |||
| Interest rate swaps, variable to fixed interest rates (percent) | 5.40% | 5.30% | 6.99% | 1.965% | 1.71% | 3.70% | |||
| Interest Expense Reclassified from Accumulated Other Comprehensive Income into Other Expenses, Net | 566 | ||||||||
| Future increase in notional amount | $ 42,247 | ||||||||