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Consolidated Balance Sheets (Unaudited) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
CURRENT ASSETS    
Cash and cash equivalents $ 31,248us-gaap_CashAndCashEquivalentsAtCarryingValue $ 33,689us-gaap_CashAndCashEquivalentsAtCarryingValue
Accounts receivable (net of allowance for doubtful accounts of $4,079 and $4,180 respectively) 21,484us-gaap_AccountsReceivableNetCurrent 20,475us-gaap_AccountsReceivableNetCurrent
Inventories 2,595us-gaap_InventoryNet 2,616us-gaap_InventoryNet
Deferred income tax asset, net 821us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent 821us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent
Other current assets 1,183us-gaap_PrepaidExpenseAndOtherAssetsCurrent 1,141us-gaap_PrepaidExpenseAndOtherAssetsCurrent
Total current assets 57,331us-gaap_AssetsCurrent 58,742us-gaap_AssetsCurrent
PROPERTY AND EQUIPMENT (net of accumulated depreciation of $21,406 and $19,822 respectively) 16,640us-gaap_PropertyPlantAndEquipmentNet 15,082us-gaap_PropertyPlantAndEquipmentNet
INTANGIBLE ASSETS, NET 4,119us-gaap_FiniteLivedIntangibleAssetsNet 4,212us-gaap_FiniteLivedIntangibleAssetsNet
GOODWILL 2,929us-gaap_Goodwill 2,929us-gaap_Goodwill
OTHER ASSETS 139us-gaap_OtherAssetsNoncurrent 141us-gaap_OtherAssetsNoncurrent
TOTAL ASSETS 81,158us-gaap_Assets 81,106us-gaap_Assets
CURRENT LIABILITIES    
Accounts payable 5,465us-gaap_AccountsPayableCurrent 6,294us-gaap_AccountsPayableCurrent
Accrued compensation 3,394us-gaap_EmployeeRelatedLiabilitiesCurrent 3,897us-gaap_EmployeeRelatedLiabilitiesCurrent
Accrued expenses and other liabilities 1,237us-gaap_AccruedLiabilitiesAndOtherLiabilities 1,208us-gaap_AccruedLiabilitiesAndOtherLiabilities
Short-term portion of equipment capital lease obligations 3,759us-gaap_CapitalLeaseObligationsCurrent 3,224us-gaap_CapitalLeaseObligationsCurrent
Total current liabilities 13,855us-gaap_LiabilitiesCurrent 14,623us-gaap_LiabilitiesCurrent
LONG-TERM LIABILITIES    
Long-term portion of equipment capital lease obligations 6,327us-gaap_CapitalLeaseObligationsNoncurrent 5,257us-gaap_CapitalLeaseObligationsNoncurrent
Deferred income tax liability, net 821us-gaap_DeferredTaxLiabilitiesNoncurrent 821us-gaap_DeferredTaxLiabilitiesNoncurrent
Total long-term liabilities 7,148us-gaap_LiabilitiesNoncurrent 6,078us-gaap_LiabilitiesNoncurrent
TOTAL LIABILITIES 21,003us-gaap_Liabilities 20,701us-gaap_Liabilities
COMMITMENTS AND CONTINGENCIES (SEE NOTE G)      
STOCKHOLDERS' EQUITY    
Common stock, $.001 par value, (100,000,000 shares authorized; 60,335,279 and 60,242,818 shares issued and outstanding, respectively) 60us-gaap_CommonStockValue 60us-gaap_CommonStockValue
Additional paid-in capital 80,262us-gaap_AdditionalPaidInCapitalCommonStock 79,751us-gaap_AdditionalPaidInCapitalCommonStock
Accumulated deficit (20,167)us-gaap_RetainedEarningsAccumulatedDeficit (19,406)us-gaap_RetainedEarningsAccumulatedDeficit
Total stockholders' equity 60,155us-gaap_StockholdersEquity 60,405us-gaap_StockholdersEquity
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $ 81,158us-gaap_LiabilitiesAndStockholdersEquity $ 81,106us-gaap_LiabilitiesAndStockholdersEquity