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Condensed Consolidated Statements of Cash Flows (unaudited) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2012
Jun. 30, 2011
Cash flows provided by (used in) operating activities:      
Net income (loss) before non-controlling interests   $ (7,751) $ (4,988)
Less net (income) loss from discontinued operations 0 0 1,404
Net income (loss) from continuing operations (3,317) (7,751) (3,584)
Adjustments to reconcile net income (loss) to net cash used in operating activities (see Schedule A):   (2,157) 787
Net cash used in operating activities - continuing operations   (9,908) (2,797)
Cash flows provided by (used in) investing activities:      
Acquisitions of property and equipment   (370) (393)
Acquisition of license   (150) 0
Restricted deposits   (45) (547)
Release of restricted deposits   (386) (342)
Maturity of short-term deposits   8,000 0
Short-term deposit   (8,015) 0
Amounts funded for severance assets   (169) (145)
Proceeds from the sale of HangXing     (492)
Acquisition of OmniMetrix, net of cash acquired   (7,835) 0
Net cash provided by (used in) investing activities - continuing operations   (8,198) (251)
Cash flows provided by (used in) financing activities:      
Proceeds from employee stock option and warrant exercises   1,303 193
Short-term bank credit, net   (510) (126)
Proceeds from borrowings of long-term debt   16 76
Repayments of long-term debt   (95) (225)
Dividends paid   (2,123)  
Other     24
Net cash provided by (used in) financing activities - continuing operations   (1,409) (58)
Discontinued operations:      
Operating cash flows     (516)
Investing cash flows     455
Financing cash flows     489
Net cash provided by (used in) discontinued operations   0 428
Effect of exchange rate changes on cash and cash equivalents   (12) 77
Net increase (decrease) in cash and cash equivalents   (19,527) (2,601)
Cash and cash equivalents at the end of the period 14,753 14,753  
Cash and cash equivalents of discontinued operations 0 0  
Cash and cash equivalents held by continuing operations at the end of the period 14,753 14,753  
A. Adjustments to reconcile net income (loss) to net cash used in operating activities:      
Depreciation and amortization   661 402
Increase in accrued severance   (211) (190)
Stock-based compensation 39 181 265
Deferred taxes   (240) (136)
Gain on sale of HangXing 0 0 (492)
Other   35 (36)
Change in operating assets and liabilities:      
Decrease (increase) in accounts receivable, unbilled work-in process, other current assets and other assets   925 (1,545)
Increase in inventory   275 209
Increase (decrease) in accounts payable, accrued payroll, payroll taxes and social benefits, other current liabilities and other liabilities   (1,735) (814)
Adjustments to reconcile net income (loss) to net cash used in operating activities (see Schedule A):   (2,157) 787
B. Non-cash items:      
Adjustment of Additional Paid In Capital and Noncontrolling Interests from Investment in Noncontrolling Interests From Additional Investment Option by Acorn   975 600
Value of shares issued as compensation     101
C. Assets/liabilities acquired in the acquisition of OmniMetrix      
Accounts Receivable 4,476 4,476  
Inventory, Net 2,652 2,652  
Other Assets, Current 2,765 2,765  
Property, Plant and Equipment, Net 842 842  
Intangible Assets 10,056 10,056  
Goodwill 6,562 6,562  
Current Liabilities 9,188 9,188  
OmniMetrix acquistion [Member]
      
Cash flows provided by (used in) investing activities:      
Acquisition of OmniMetrix, net of cash acquired   (7,835)  
C. Assets/liabilities acquired in the acquisition of OmniMetrix      
Accounts Receivable 328 328  
Inventory, Net 234 234  
Other Assets, Current 10 10  
Property, Plant and Equipment, Net 26 26  
Intangible Assets 5,581 5,581  
Goodwill 1,930 1,930  
Current Liabilities $ (274) $ (274)