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           Common Stock (Details) 
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           Dec. 31, 2014 
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           Dec. 23, 2009 
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| Common Stock [Abstract] | ||
| Remaining number of shares authorized to be repurchased | 411,910us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased | |
| Number of rights distributed for each share of common stock | 1jcs_ClassOfWarrantOrRightNumberOfRightsDistributedBySecurities | |
| Number of securities into which each right may be converted | 0.01us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight | |
| Exercise price of right | 41us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights | |
| Percentage of common stock required to be purchased for rights to become exercisable | 16.50%jcs_PercentageOfCommonStockRequiredToBePurchasedForRightsToBecomeExercisable | 
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- Definition 
          Class of Warrant or Right, Number of Rights Distributed by Securities No definition available. 
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- Definition 
          Percentage of common stock required to be purchased for rights to become exercisable No definition available. 
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- Definition 
          Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares. No definition available. 
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- Details 
          
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- Definition 
          The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. No definition available. 
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