| Other Assets Depreciation Expense (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended | |
|---|---|---|---|
| Jun. 30, 2014 | Jun. 30, 2014 | Jun. 30, 2013 | |
| Property, Plant and Equipment [Line Items] | |||
| Depreciation of fixed assets | $ 257 | $ 463 | $ 256 | 
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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Details 
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