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ELECTRONIC SYSTEMS TECHNOLOGY, INC. DBA ESTEEM WIRELESS MODEMS STATEMENTS OF CASH FLOWS (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net income (loss) $ (101,790)us-gaap_ProfitLoss $ 116,197us-gaap_ProfitLoss
Noncash expenses included in income (loss) :    
Depreciation and amortization 17,824us-gaap_DepreciationAndAmortization 13,540us-gaap_DepreciationAndAmortization
Deferred income taxes (49,401)us-gaap_DeferredIncomeTaxExpenseBenefit (11,700)us-gaap_DeferredIncomeTaxExpenseBenefit
Share-based compensation 2,245us-gaap_ShareBasedCompensation 1,713us-gaap_ShareBasedCompensation
Decrease (increase) in operating assets:    
Accounts receivable (22,081)us-gaap_IncreaseDecreaseInAccountsReceivable 122,699us-gaap_IncreaseDecreaseInAccountsReceivable
Inventories (93,445)us-gaap_IncreaseDecreaseInInventories (123,736)us-gaap_IncreaseDecreaseInInventories
Prepaid expenses 23,984us-gaap_IncreaseDecreaseInPrepaidExpense 3,454us-gaap_IncreaseDecreaseInPrepaidExpense
Accrued interest receivable (161)us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet (1,246)us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet
Vendor deposits 13,083us-gaap_IncreaseDecreaseInRetainagePayable (11,408)us-gaap_IncreaseDecreaseInRetainagePayable
Federal income tax refund receivable (2,721)us-gaap_IncomeTaxesReceivable  
Accounts payable 5,905us-gaap_IncreaseDecreaseInAccountsPayable 2,393us-gaap_IncreaseDecreaseInAccountsPayable
Accrued wages, bonus and vacation (4,200)us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities 9,435us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities
Other accrued liabilities 613us-gaap_IncreaseDecreaseInOtherAccruedLiabilities  
Refundable deposits 21,337us-gaap_IncreaseDecreaseInCustomerDeposits 2,681us-gaap_IncreaseDecreaseInCustomerDeposits
Federal income tax payable (3,700)us-gaap_IncreaseDecreaseInIncomeTaxes 3,700us-gaap_IncreaseDecreaseInIncomeTaxes
Net Cash From Operating Activities (192,508)us-gaap_NetCashProvidedByUsedInOperatingActivities 127,722us-gaap_NetCashProvidedByUsedInOperatingActivities
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchase of certificates of deposit (1,602,626)us-gaap_PaymentsToAcquireShortTermInvestments (1,522,000)us-gaap_PaymentsToAcquireShortTermInvestments
Proceeds from maturities of certificates of deposit 1,614,000us-gaap_ProceedsFromSaleOfShortTermInvestments 1,475,000us-gaap_ProceedsFromSaleOfShortTermInvestments
Additions to property and equipment (78,360)us-gaap_PropertyPlantAndEquipmentAdditions (2,639)us-gaap_PropertyPlantAndEquipmentAdditions
Net Cash From Investing Activities (66,986)us-gaap_NetCashProvidedByUsedInInvestingActivities (49,639)us-gaap_NetCashProvidedByUsedInInvestingActivities
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS (259,494)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease 78,083us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR 896,580us-gaap_CashAndCashEquivalentsAtCarryingValue 818,497us-gaap_CashAndCashEquivalentsAtCarryingValue
CASH AND CASH EQUIVALENTS AT END OF YEAR 637,086us-gaap_CashAndCashEquivalentsAtCarryingValue 896,580us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash paid during the year for:    
Income taxes 2,721us-gaap_IncomeTaxesPaid  
Cash and cash equivalents:    
Cash 44,591us-gaap_Cash 133,129us-gaap_Cash
Money market investments 592,495us-gaap_MoneyMarketFundsAtCarryingValue 763,451us-gaap_MoneyMarketFundsAtCarryingValue
Total cash and cash equivalents $ 637,086us-gaap_CashEquivalentsAtCarryingValue $ 896,580us-gaap_CashEquivalentsAtCarryingValue