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Subsequent Event (Details) (Subsequent Event [Member], Madison [Member], USD $)
In Millions, except Per Share data, unless otherwise specified |
0 Months Ended | 12 Months Ended | |
|---|---|---|---|
|
Jan. 16, 2015
|
Dec. 31, 2014
|
Jan. 16, 2015
|
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Subsequent Event [Member] | Madison [Member]
|
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| Subsequent Event [Line Items] | |||
| Business Acquisition, Date of Acquisition Agreement | Jan. 16, 2015 | ||
| Share of Common Stock Converted To Cash Price | $ 22.90 | $ 22.90 | |
| Transaction value | $ 14.4 |