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           Variable Interest Entity and Guarantee (Details) (USD $) 
        In Millions, unless otherwise specified  | 
        
           Jun. 30, 2013
 
          AKA [Member] 
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           Apr. 02, 2013
 
          AKA [Member] 
         | 
      
|---|---|---|
| Concentration Risk [Line Items] | ||
| Equity Method Investment, Ownership Percentage | 50.00% | |
| Accounts Receivable, Net, Current | $ 0.9 | |
| Deferred Revenue | $ 0.6 | 
| X | ||||||||||
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- Definition 
          For an unclassified balance sheet, the amount due from customers or clients for goods or services that have been delivered or sold in the normal course of business, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Details 
          
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| X | ||||||||||
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- Definition 
          Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Definition 
          The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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