v2.3.0.15
Condensed Consolidated Statements Of Cash Flow (USD $)
9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Cash flows from operating activities:  
Net loss$ (3,376,035)$ (3,803,167)
Adjustments to reconcile net loss to net cash used in operating activities:  
Share-based compensation expense2,249,3912,144,105
Depreciation1,450,9901,594,296
Write-off of deferred financing costs and discount on long-term debt153,101 
Loss (gain) on disposal of equipment50,699(1,563)
Amortization of deferred financing costs71,93978,648
Amortization of discount on long-term debt21,707146,738
Amortization of intangible assets41,459181,403
Change in allowance for doubtful accounts23,584(20,509)
Changes in assets and liabilities:  
Accounts receivable505,565(1,559,264)
Inventories(880,321)(1,786,129)
Other current assets(202,183)762,289
Accounts payable305,9281,135,987
Accrued liabilities(1,190,856)(434,940)
Other non-current assets and non-current liabilities(84,418)(4,991)
Net cash used in operating activities(859,450)(1,567,097)
Cash flows from investing activities:  
Purchases of property and equipment(851,984)(1,534,687)
Purchases of available-for-sale securities(12,602,233)(7,263,213)
Maturities of available-for-sale securities9,156,2416,148,491
Net proceeds from the sale of equipment89,476 
Net cash used in investing activities(4,208,500)(2,649,409)
Cash flows from financing activities:  
Payments on debt and capital leases(3,661,434)(1,670,091)
Proceeds from debt borrowings7,500,000 
Payment of debt fees(80,930)(85,059)
Proceeds from issuance of common stock under employee stock purchase plan345,852225,084
Proceeds from stock option exercises1,056,492204,354
Shares repurchased for payment of taxes on stock awards(735,505) 
Net cash provided by (used in) financing activities4,424,475(1,325,712)
Effect of exchange rate changes on cash and cash equivalents(155,721)162,884
Net decrease in cash and cash equivalents(799,196)(5,379,334)
Cash and cash equivalents-beginning of period4,230,7098,905,425
Cash and cash equivalents-end of period3,431,5133,526,091
Supplemental cash flow information:  
Cash paid for interest289,677334,295
Cash paid for taxes25,48021,639
Non-cash investing and financing activities:  
Purchases of property and equipment in current liabilities69,80346,873
Assets acquired through capital lease$ 26,655