Annual report pursuant to Section 13 and 15(d)

Commitments And Contingencies (Narrative) (Details)

v2.4.1.9
Commitments And Contingencies (Narrative) (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Commitments and Contingencies [Line Items]      
Rent expense $ 546,000us-gaap_OperatingLeasesRentExpenseNet $ 409,000us-gaap_OperatingLeasesRentExpenseNet $ 443,000us-gaap_OperatingLeasesRentExpenseNet
Interest rate 6.83%us-gaap_DebtInstrumentInterestRateEffectivePercentage    
Outstanding balance on the mortgage 628,000us-gaap_LongTermDebt    
Line of credit, amount outstanding 0us-gaap_LineOfCredit 0us-gaap_LineOfCredit  
Line of credit 10,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity    
Line of credit, basis spread on variable rate 1.10%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1    
Line of credit facility, interest rate at period end 1.40%us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd    
Accrued (income)/expense for long-term compensation plans 0us-gaap_OtherLaborRelatedExpenses (124,000)us-gaap_OtherLaborRelatedExpenses (16,000)us-gaap_OtherLaborRelatedExpenses
Accrual for long-term compensation plans 0us-gaap_AccruedEmployeeBenefitsCurrentAndNoncurrent 199,000us-gaap_AccruedEmployeeBenefitsCurrentAndNoncurrent  
Long-term compensation plan, payments for awards 199,000jcs_LongTermCompensationPlanPaymentsForAwards 27,000jcs_LongTermCompensationPlanPaymentsForAwards 1,657,000jcs_LongTermCompensationPlanPaymentsForAwards
Long-term compensation plan, percentage paid out in cash, cycle 1 25.00%jcs_LongTermCompensationPlanPercentagePaidOutInCashCycle1    
Long-term compensation plan, percentage paid out in stock, cycle 1 75.00%jcs_LongTermCompensationPlanPercentagePaidOutInStockCycle1    
Long-term compensation plan, percentage paid out in stock, cycle 2 100.00%jcs_LongTermCompensationPlanPercentagePaidOutInStockCycle2    
Operating Leases, Rent Expense, Net 546,000us-gaap_OperatingLeasesRentExpenseNet 409,000us-gaap_OperatingLeasesRentExpenseNet 443,000us-gaap_OperatingLeasesRentExpenseNet
Long-term Debt 628,000us-gaap_LongTermDebt    
Line of Credit Facility, Maximum Borrowing Capacity 10,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity    
Line of Credit Facility, Interest Rate at Period End 1.40%us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd    
Accrued Employee Benefits $ 0us-gaap_AccruedEmployeeBenefitsCurrentAndNoncurrent $ 199,000us-gaap_AccruedEmployeeBenefitsCurrentAndNoncurrent  
Maximum [Member]      
Commitments and Contingencies [Line Items]      
Operating lease terms 5 years    
Minimum [Member]      
Commitments and Contingencies [Line Items]      
Operating lease terms 1 year