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Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Cash flows from operating activities:      
Net loss $ (6,055) $ (8,517) $ (11,015)
Less: loss from discontinued operations     (1,201)
Net loss from continuing operations (6,055) (8,517) (9,814)
Adjustments to reconcile net loss from continuing operations to net cash provided by (used in) operating activities:      
Loss on impairment   156  
Depreciation 589 790 987
Stock-based compensation 426 878 624
Valuation of equity instruments 56 1,812  
Provision for doubtful accounts receivable 115 44 45
Amortization of intangible assets 649 1,073  
Amortization of discounts on long-term borrowings 574 349  
Deferred revenue 16 1,215 104
Change in estimate of contingent liabilities (411)    
(Gain) loss on disposal of property and equipment (11) (22) 44
Changes in assets and liabilities:      
Accounts receivable, inventories, and other assets 3,411 (1,694) (906)
Accounts payable and accrued liabilities (1,976) 5,409 (1,225)
Total adjustments 3,438 10,010 (327)
Net cash (used in) provided by continuing operations (2,617) 1,493 (10,141)
Net cash used in discontinued operations     (421)
Net cash (used in) provided by operating activities (2,617) 1,493 (10,562)
Cash flows from investing activities:      
Cash paid for acquisition of subsidiary     (1,500)
Proceeds from the sale of property and equipment 19 50  
Acquisition of property and equipment (256) (332) (182)
Net cash used in continuing investing activities (237) (282) (1,682)
Net cash provided by discontinued investing activities     765
Net cash used in investing activities (237) (282) (917)
Cash flows from financing activities:      
Proceeds from issuances of common stock, net 456 669 3,508
Proceeds from exercise of stock options 5 8  
Proceeds from other borrowings 605 1,150 620
Payments on other borrowings (892)    
Net proceeds (repayments) on credit line borrowings 701   (1,776)
Net cash provided by continuing financing activities 875 1,827 2,352
Net cash used in discontinued financing activities     (428)
Net cash provided by financing activities 875 1,827 1,924
Effect of exchange rate changes on cash 8 7 49
Net (decrease) increase in cash and cash equivalents (1,971) 3,045 (9,506)
Cash and cash equivalents at beginning of year 4,107 1,062 10,568
Cash and cash equivalents at end of year 2,136 4,107 1,062
Classification of cash and cash equivalents:      
Cash and cash equivalents 2,117 3,979 1,062
Restricted cash held 19 128  
Cash and cash equivalents at end of period 2,136 4,107 1,062
Supplemental Information      
Interest paid 328 171 98
Non-cash investing and financing activities:      
Fully depreciated assets disposed of 1,050 1,548 1,149
The Company purchased all of the members' interest of Stones River Companies, LLC for $1,500. In conjunction with the acquisition, liabilities were incurred and common stock was issued as follows:      
Fair value of assets acquired     4,700
Cash paid for the members' interest     (1,500)
Liabilities incurred and common stock issued     $ 3,200