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Consolidated Statements of Cash Flows (unaudited) (USD $)
In Thousands
 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Cash flows provided by (used in) operating activities:    
Net loss $ (4,988) $ (6,590)
Less net loss from discontinued operations 0 5,203
Net loss from continuing operations (4,988) (1,387)
A. Adjustments to reconcile net income to net cash used in operating activities:    
Depreciation and amortization 1,534 816
Exchange rate adjustment on amounts funded for severance assets net of exchange adjustment on accrued severance 37 (24)
Increase in liability for accrued severance 190 210
Amortization of stock-based deferred compensation 410 512
Deferred taxes (136) (26)
Gain on investment in GridSense 0 (1,327)
Gain on sale of HangXing (492) 0
Other (1) (6)
Write-off of license 74 0
Change in operating assets and liabilities:    
Increase in accounts receivable, unbilled work-in process, other current assets and other assets 1,237 (3,289)
Increase in inventory (2,233) (1,062)
Increase in accounts payable, accrued payroll, payroll taxes and social benefits, other current liabilities and other liabilities 1,055 2,408
Adjustments to reconcile net loss to net cash used in operating activities (see Schedule A): 1,675 (1,788)
Net cash used in operating activities - continuing operations (3,313) (3,175)
Cash flows provided by (used in) investing activities:    
Investment in EnerTech 0 (500)
Restricted deposits (547) (1,182)
Release of restricted deposits 842 672
Loan to GridSense prior to acquisition 0 (200)
Proceeds from the sale of HangXing 492 0
Amounts funded for severance assets (145) (123)
Acquisitions of property and equipment (438) (5,592)
Acquisitions of license 0 (82)
Net cash provided by (used in) investing activities - continuing operations 204 (8,352)
Cash flows provided by (used in) financing activities:    
Proceeds from capital raise, net of transaction costs 0 11,445
Issuance of shares to non-controlling interests in consolidated subsidiary 0 2,383
Exercise of options and warrants 193 220
Short-term debt borrowings, net 374 341
Proceeds from borrowings of long-term debt 76 0
Repayments of long-term debt (236) (65)
Other 24 6
Net cash provided by financing activities - continuing operations 431 14,330
Discontinued operations:    
Operating cash flows 0 (5,548)
Investing cash flows 0 982
Financing cash flows 0 352
Net cash used in discontinued operations 0 (4,214)
Effect of exchange rate changes on cash and cash equivalents 77 142
Effect of exchange rate changes on cash and cash equivalents of discontinued operations 0 66
Net decrease in cash and cash equivalents (2,601) (1,203)
Cash and cash equivalents at beginning of period 7,356 11,208
Cash and cash equivalents at end of period 4,755 10,005
Non-cash items:    
Adjustment of additional paid-in-capital and non-controlling interests from investment in CoaLogix by non-controlling interests   492
Adjustment of additional paid-in-capital and non-controlling from exercise of option by Acorn in USSI 600 176
Value of shares issued as compensation 101  
Asset retirement obligations recorded in property and equipment, net 139  
Intangibles acquired (see Note 6) 750  
USSI
    
Cash flows provided by (used in) investing activities:    
Acquisition of businesses 0 7
Gridsense
    
A. Adjustments to reconcile net income to net cash used in operating activities:    
Gain on investment in GridSense   (1,327)
Cash flows provided by (used in) investing activities:    
Acquisition of businesses 0 (1,352)
OMI
    
Cash flows provided by (used in) investing activities:    
Acquisition of businesses $ 0 $ 0