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Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
ASSETS    
Cash and cash equivalents $ 650us-gaap_CashAndCashEquivalentsAtCarryingValue $ 55us-gaap_CashAndCashEquivalentsAtCarryingValue
Receivables, less allowance of $168 - 2014 and $86 - 2013 2,798us-gaap_AccountsReceivableNetCurrent 2,386us-gaap_AccountsReceivableNetCurrent
Inventories 1,811us-gaap_InventoryNet 2,523us-gaap_InventoryNet
Prepaids and other assets 805us-gaap_PrepaidExpenseAndOtherAssetsCurrent 1,585us-gaap_PrepaidExpenseAndOtherAssetsCurrent
Total current assets 6,064us-gaap_AssetsCurrent 6,549us-gaap_AssetsCurrent
Rental equipment 27,825us-gaap_PropertyPlantAndEquipmentOther 33,579us-gaap_PropertyPlantAndEquipmentOther
Less accumulated depreciation 20,935us-gaap_PropertyPlantAndEquipmentOtherAccumulatedDepreciation 23,869us-gaap_PropertyPlantAndEquipmentOtherAccumulatedDepreciation
Net rental equipment 6,890us-gaap_PropertyPlantAndEquipmentOtherNet 9,710us-gaap_PropertyPlantAndEquipmentOtherNet
Property, plant and equipment 2,140us-gaap_PropertyPlantAndEquipmentGross 2,129us-gaap_PropertyPlantAndEquipmentGross
Less accumulated depreciation 1,034us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment 967us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Net property, plant and equipment 1,106us-gaap_PropertyPlantAndEquipmentNet 1,162us-gaap_PropertyPlantAndEquipmentNet
Goodwill 744us-gaap_Goodwill 744us-gaap_Goodwill
Restricted cash 212us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue   
Other assets 229us-gaap_OtherAssetsNoncurrent 340us-gaap_OtherAssetsNoncurrent
TOTAL ASSETS 15,245us-gaap_Assets 18,505us-gaap_Assets
LIABILITIES AND STOCKHOLDERS' EQUITY    
Accounts payable 1,798us-gaap_AccountsPayableCurrent 1,446us-gaap_AccountsPayableCurrent
Accrued liabilities 7,857us-gaap_AccruedLiabilitiesCurrent 8,354us-gaap_AccruedLiabilitiesCurrent
Current portion of long-term debt 1,811us-gaap_LongTermDebtCurrent 2,478us-gaap_LongTermDebtCurrent
Warrant liabilities    229us-gaap_WarrantsAndRightsOutstanding
Total current liabilities 11,466us-gaap_LiabilitiesCurrent 12,507us-gaap_LiabilitiesCurrent
Long-term debt:    
Notes payable    394us-gaap_LongTermNotesPayable
Deferred pension liability and other 5,647us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent 4,103us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
Total liabilities 17,113us-gaap_Liabilities 17,004us-gaap_Liabilities
Stockholders' equity:    
Common - $0.001 par value - 10,000,000 shares authorized, 1,700,429 common shares issued in 2014 and 1,051,253 common shares issued in 2013 2us-gaap_CommonStockValue 1us-gaap_CommonStockValue
Additional paid-in-capital 27,959us-gaap_AdditionalPaidInCapital 23,868us-gaap_AdditionalPaidInCapital
Accumulated deficit (21,305)us-gaap_RetainedEarningsAccumulatedDeficit (16,677)us-gaap_RetainedEarningsAccumulatedDeficit
Accumulated other comprehensive loss (5,461)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax (2,628)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
Treasury stock - at cost - 15,344 common shares in 2014 and 2013 (3,063)us-gaap_TreasuryStockValue (3,063)us-gaap_TreasuryStockValue
Total stockholders' equity (deficit) (1,868)us-gaap_StockholdersEquity 1,501us-gaap_StockholdersEquity
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT) $ 15,245us-gaap_LiabilitiesAndStockholdersEquity $ 18,505us-gaap_LiabilitiesAndStockholdersEquity