|
Debt Instruments (Details) (USD $)
In Millions, unless otherwise specified |
6 Months Ended |
|---|---|
|
Jun. 30, 2014
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|
Line of Credit [Member]
|
|
| Debt Instruments | |
| Maximum borrowings available | $ 60.0 |
| Minimum liquidity requirement | 5.0 |
| Outstanding balance of borrowings | 0 |
| Available borrowing capacity | 58.9 |
|
Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member]
|
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| Debt Instruments | |
| Variable interest rate base | LIBOR |
|
Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
|
|
| Debt Instruments | |
| Margin (as a percent) | 2.00% |
|
Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
|
|
| Debt Instruments | |
| Margin (as a percent) | 2.25% |
|
Line of Credit [Member] | Debt Instrument, Variable Rate Base, Alternate Base Rate [Member]
|
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| Debt Instruments | |
| Variable interest rate base | alternate base rate |
|
Line of Credit [Member] | Debt Instrument, Variable Rate Base, Alternate Base Rate [Member] | Minimum [Member]
|
|
| Debt Instruments | |
| Margin (as a percent) | 1.00% |
|
Line of Credit [Member] | Debt Instrument, Variable Rate Base, Alternate Base Rate [Member] | Maximum [Member]
|
|
| Debt Instruments | |
| Margin (as a percent) | 1.25% |
|
Letter of Credit [Member]
|
|
| Debt Instruments | |
| Maximum borrowings available | 15.0 |
| Outstanding amount | $ 1.1 |