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Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 26, 2014
Dec. 27, 2013
Cash flows from operating activities:    
Net loss $ (32,858)us-gaap_ProfitLoss $ (27,023)us-gaap_ProfitLoss
Adjustments to reconcile net loss to net cash provided by operating activities:    
Depreciation and amortization 7,234us-gaap_DepreciationDepletionAndAmortization 7,393us-gaap_DepreciationDepletionAndAmortization
Stock incentive plan expense 2,479us-gaap_StockOptionPlanExpense 1,914us-gaap_StockOptionPlanExpense
Loss (gain) on disposal of assets 57us-gaap_GainLossOnDispositionOfAssets (614)us-gaap_GainLossOnDispositionOfAssets
Amortization and write-off of deferred loan costs 3,069puls_AmortizationAndWriteOffOfDeferredLoanCosts 1,876puls_AmortizationAndWriteOffOfDeferredLoanCosts
Loss on extinguishment of debt 786us-gaap_GainsLossesOnExtinguishmentOfDebt 1,152us-gaap_GainsLossesOnExtinguishmentOfDebt
Amortization of debt discount 5,496us-gaap_AmortizationOfDebtDiscountPremium 4,869us-gaap_AmortizationOfDebtDiscountPremium
Payment-in-kind interest on debt 15,702us-gaap_PaidInKindInterest 12,572us-gaap_PaidInKindInterest
Change in fair value on warrant liability 0puls_UnrealizedGainLossOnWarrantyLiability 2,878puls_UnrealizedGainLossOnWarrantyLiability
Severance, impairment and other associated costs, net of cash payments 1,307us-gaap_RestructuringCostsAndAssetImpairmentCharges 1,708us-gaap_RestructuringCostsAndAssetImpairmentCharges
CEO transition costs, net of cash payments 2,660puls_ExecutiveTransitionCostsNetofCashPayments 0puls_ExecutiveTransitionCostsNetofCashPayments
Deferred income taxes (853)us-gaap_IncreaseDecreaseInDeferredIncomeTaxes 1,034us-gaap_IncreaseDecreaseInDeferredIncomeTaxes
Other, net 1,868us-gaap_OtherOperatingActivitiesCashFlowStatement (78)us-gaap_OtherOperatingActivitiesCashFlowStatement
Changes in operating assets and liabilities:    
Accounts receivable 7,018us-gaap_IncreaseDecreaseInAccountsReceivable 1,448us-gaap_IncreaseDecreaseInAccountsReceivable
Inventory 687us-gaap_IncreaseDecreaseInInventories (3,766)us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other current assets 3,395us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets 1,247us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Accounts payable (7,548)us-gaap_IncreaseDecreaseInAccountsPayable 6,029us-gaap_IncreaseDecreaseInAccountsPayable
Accrued expenses and other current liabilities (5,430)us-gaap_IncreaseDecreaseInAccruedLiabilities (4,866)us-gaap_IncreaseDecreaseInAccruedLiabilities
Net cash provided by operating activities 5,069us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations 7,773us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Cash flows from investing activities:    
Capital expenditures (4,528)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment (8,690)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Cash restricted due to litigation 0puls_CashRestrictedDueToLitigation (1,550)puls_CashRestrictedDueToLitigation
Proceeds from sale of assets 494us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment 585us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
Net cash used in investing activities (4,034)us-gaap_NetCashProvidedByUsedInInvestingActivities (9,655)us-gaap_NetCashProvidedByUsedInInvestingActivities
Cash flows from financing activities:    
Principal repayments of debt (3,956)us-gaap_RepaymentsOfLongTermDebt 0us-gaap_RepaymentsOfLongTermDebt
Debt issuance costs (3,123)us-gaap_PaymentsOfDebtIssuanceCosts (2,229)us-gaap_PaymentsOfDebtIssuanceCosts
Taxes paid related to net share settlement of equity awards (299)us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation 0us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation
Change in restricted cash 500us-gaap_IncreaseDecreaseInRestrictedCash (500)us-gaap_IncreaseDecreaseInRestrictedCash
Net cash used in financing activities (6,878)us-gaap_NetCashProvidedByUsedInFinancingActivities (2,729)us-gaap_NetCashProvidedByUsedInFinancingActivities
Net effect of exchange rate changes on cash (72)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations 38us-gaap_EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations
Net decrease in cash and cash equivalents (5,915)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease (4,573)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents at beginning of year 26,902us-gaap_CashAndCashEquivalentsAtCarryingValue 31,475us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents at end of year $ 20,987us-gaap_CashAndCashEquivalentsAtCarryingValue $ 26,902us-gaap_CashAndCashEquivalentsAtCarryingValue