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CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
CURRENT ASSETS:    
Cash and cash equivalents $ 5,379us-gaap_CashAndCashEquivalentsAtCarryingValue $ 1,609us-gaap_CashAndCashEquivalentsAtCarryingValue
Accounts receivable, net 8,345us-gaap_AccountsReceivableNetCurrent 7,627us-gaap_AccountsReceivableNetCurrent
Inventories, net 2,984us-gaap_InventoryNet 3,005us-gaap_InventoryNet
Other current assets 1,524us-gaap_OtherAssetsCurrent 1,191us-gaap_OtherAssetsCurrent
Total current assets 18,232us-gaap_AssetsCurrent 13,432us-gaap_AssetsCurrent
PROPERTY AND EQUIPMENT:    
Equipment 11,311us-gaap_MachineryAndEquipmentGross 11,369us-gaap_MachineryAndEquipmentGross
Furniture, fixtures & leasehold improvements 3,875tbio_FurnitureFixturesAndLeaseholdImprovementsGross 3,877tbio_FurnitureFixturesAndLeaseholdImprovementsGross
Property and equipment, gross 15,186us-gaap_PropertyPlantAndEquipmentGross 15,246us-gaap_PropertyPlantAndEquipmentGross
Less: accumulated depreciation (13,891)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (13,764)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Property and equipment, net 1,295us-gaap_PropertyPlantAndEquipmentNet 1,482us-gaap_PropertyPlantAndEquipmentNet
OTHER ASSETS:    
Goodwill 6,918us-gaap_Goodwill 6,918us-gaap_Goodwill
Intangibles, net 7,854us-gaap_IntangibleAssetsNetExcludingGoodwill 7,964us-gaap_IntangibleAssetsNetExcludingGoodwill
Other assets 192us-gaap_OtherAssetsNoncurrent 210us-gaap_OtherAssetsNoncurrent
Assets 34,491us-gaap_Assets 30,006us-gaap_Assets
CURRENT LIABILITIES:    
Current maturities of long-term debt 523us-gaap_LongTermDebtCurrent 462us-gaap_LongTermDebtCurrent
Accounts payable 5,008us-gaap_AccountsPayableCurrent 4,871us-gaap_AccountsPayableCurrent
Accrued compensation 980us-gaap_EmployeeRelatedLiabilitiesCurrent 1,129us-gaap_EmployeeRelatedLiabilitiesCurrent
Accrued expenses 2,368us-gaap_AccruedLiabilitiesCurrent 2,550us-gaap_AccruedLiabilitiesCurrent
Deferred revenue 1,121us-gaap_DeferredRevenueCurrent 1,035us-gaap_DeferredRevenueCurrent
Other liabilities 1,067us-gaap_OtherLiabilitiesCurrent 1,068us-gaap_OtherLiabilitiesCurrent
Total current liabilities 11,067us-gaap_LiabilitiesCurrent 11,115us-gaap_LiabilitiesCurrent
LONG TERM LIABILITIES:    
Long-term debt, less current maturities 7,925us-gaap_LongTermDebtNoncurrent 7,375us-gaap_LongTermDebtNoncurrent
Common stock warrant liability 290us-gaap_WarrantsAndRightsOutstanding 145us-gaap_WarrantsAndRightsOutstanding
Accrued preferred stock dividend 3,461us-gaap_DividendsPayableCurrentAndNoncurrent 3,130us-gaap_DividendsPayableCurrentAndNoncurrent
Other long-term liabilities 1,703us-gaap_OtherLiabilitiesNoncurrent 1,688us-gaap_OtherLiabilitiesNoncurrent
Total liabilities 24,446us-gaap_Liabilities 23,453us-gaap_Liabilities
STOCKHOLDERS’ EQUITY:    
Preferred stock, $0.01 par value, 15,000,000 shares authorized, 4,029,502 shares issued and outstanding 40us-gaap_PreferredStockValue 40us-gaap_PreferredStockValue
Common stock, $0.01 par value, 150,000,000 shares authorized, 11,857,078 and 8,084,471 shares issued and outstanding, respectively 119us-gaap_CommonStockValue [1] 81us-gaap_CommonStockValue [1]
Additional paid-in capital 196,540us-gaap_AdditionalPaidInCapital [1] 189,680us-gaap_AdditionalPaidInCapital [1]
Accumulated other comprehensive income 306us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax 340us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
Accumulated deficit (186,960)us-gaap_RetainedEarningsAccumulatedDeficit (183,588)us-gaap_RetainedEarningsAccumulatedDeficit
Total stockholders’ equity 10,045us-gaap_StockholdersEquity 6,553us-gaap_StockholdersEquity
Liabilities and equity $ 34,491us-gaap_LiabilitiesAndStockholdersEquity $ 30,006us-gaap_LiabilitiesAndStockholdersEquity
[1] The shares of common stock and additional paid-in capital for all periods presented reflect the one-for-twelve reverse stock split that took effect on January 27, 2014.