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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Cash flows from operating activities:      
Net income (loss) $ (23,192) $ (5,850) $ 30,619
Adjustments required to reconcile net income (loss) to net cash provided by operating activities:      
Depreciation and amortization 22,582 24,121 14,794
Impairment of goodwill and other intangible assets 31,879 18,043   
Gain from the sale of investment accounted for at cost    (3,034) (24,314)
Stock-based compensation of options and RSUs related to employees and non- employees 2,445 2,009 1,726
Accrued severance pay, net 88 (285) (135)
Accrued interest and exchange rate differences on restricted cash, marketable securities and deposits, net (209) 500 (246)
Exchange rate differences on long-term loans 90 (112) (415)
Capital loss from disposal of property and equipment 61 286 270
Deferred income taxes (3,657) (428) (250)
Decrease (increase) in trade receivables, net (9,891) 646 (1,562)
Increase in other assets (including short-term, long-term and deferred charges) (3,054) (21,062) (5,545)
Decrease (increase) in inventories (4,969) 4,889 2,946
Increase (decrease) in trade payables (2,176) 7,066 (4,759)
Increase (decrease) in accrued expenses (1,265) 11 2,256
Increase (decrease) in advances from customers held by trustees, net 2,897 547 (1,133)
Increase (decrease) in other accounts payable and other long-term liabilities 4 (8,972) 4,574
Net cash provided by operating activities 21,571 8,597 12,934
Cash flows from (used in) investing activities:      
Purchase of property and equipment 4,646 8,948 7,638
Proceeds from sale of investment accounted for at cost    3,034 24,314
Purchase of held-to-maturity marketable securities and deposits       (30,693)
Proceeds from held-to-maturity marketable securities and deposits       62,384
Purchase of available-for-sale marketable securities       (4,804)
Proceeds from available-for-sale marketable securities       4,888
Investment in restricted cash (including long-term) (24,507) (23,548) (2,941)
Proceeds from restricted cash (including long-term) 28,639 23,014 1,339
Proceeds from working capital adjustment to subsidiary purchase price    1,465   
Investment in restricted cash held by trustees (35,442) (11,737) (12,346)
Proceeds from restricted cash held by trustees 35,447 10,660 13,673
Acquisitions of subsidiaries, net of cash acquired    [1],[2],[3] (1,867) [1],[2],[3] (153,883) [1],[2],[3]
Purchase of intangible assets (89) (38) (2,515)
Net cash used in investing activities (598) (7,965) (108,222)
Cash flows from (used in) financing activities:      
Exercise of stock options and issuance of restricted share units 254 27 39
Repayment of convertible subordinated notes (14,322) (835) (839)
Short-term bank credit, net 546 842 (946)
Proceeds from long-term loans 10,000    40,000
Repayment of long-term loans (6,452) (1,225) (8,409)
Net cash provided by (used in) financing activities (9,974) (1,191) 29,845
Effect of exchange rate changes on cash and cash equivalents (262) (448) 9
Increase (decrease) in cash and cash equivalents 10,737 (1,007) (65,434)
Cash and cash equivalents at the beginning of the year 56,231 57,238 122,672
Cash and cash equivalents at the end of the year 66,968 56,231 57,238
Cash paid during the year for:      
Interest 4,135 2,306 1,334
Income taxes 906 672 400
Non-cash transactions:      
Conversion of long-term convertible subordinated notes 52 9 1
Classification from inventories to property and equipment 2,050 1,997 717
Classification from property and equipment to inventories 858 110 128
Purchase of intangible assets 1,505      
Raysat Antenna Systems [Member]
      
Estimated fair value of assets acquired and liabilities assumed at the acquisition date:      
Working capital (excluding cash and cash equivalents)     (4,727)
Property and equipment     3,147
Intangible assets     9,778
Goodwill     20,162
Other non-current assets     2,144
Long-term liabilities     (3,436)
Net assets acquired     27,068
Deferred payment     (751)
Purchase price, total     26,317
Wavestream Corporation [Member]
      
Estimated fair value of assets acquired and liabilities assumed at the acquisition date:      
Working capital (excluding cash and cash equivalents)     4,816
Property and equipment     3,513
Intangible assets     43,568
Goodwill     85,920 [4]
Other non-current assets     355
Long-term liabilities     (9,097) [5],[6]
Net assets acquired     129,075
Contingent consideration     (1,509)
Purchase price, total     127,566
Cicat Networks, Inc. [Member]
      
Estimated fair value of assets acquired and liabilities assumed at the acquisition date:      
Working capital (excluding cash and cash equivalents)   226  
Property and equipment   42  
Intangible assets   720  
Goodwill   1,890  
Other non-current assets   209  
Long-term liabilities   (398)  
Net assets acquired   2,689  
Contingent consideration   (822)  
Purchase price, total   $ 1,867  
[1] Payment for the acquisition of RAS (see also Note 1c): Estimated fair value of assets acquired and liabilities assumed at the acquisition date: Working capital (excluding cash and cash equivalents) $ (4,727) Property and equipment 3,147 Intangible assets 9,778 Goodwill 20,162 Other non-current assets 2,144 Long-term liabilities (3,436) 27,068 Deferred payment (751) $ 26,317
[2] Payment for the acquisition of Wavestream (see also Note 1d): Estimated fair value of assets acquired and liabilities assumed at the acquisition date: Year ended December 31, 2012 2011 2010 Working capital (excluding cash and cash equivalents) $ 4,816 Property and equipment 3,513 Other non-current assets 355 Goodwill 85,920 Intangible assets 43,568 Long-term liabilities *) (9,097) 129,075 Contingent consideration (1,509) $ 127,566 *) Mainly deferred tax liabilities
[3] Payment for the acquisition of CICAT (see also Note 1g): Estimated fair value of assets acquired and liabilities assumed at the acquisition date: Year ended December 31, 2012 2011 2010 Working capital (excluding cash and cash equivalents) $ 226 Property and equipment 42 Intangible assets 720 Goodwill 1,890 Other non-current assets 209 Long-term liabilities (398) 2,689 Contingent consideration (822) $ 1,867
[4] In 2011 the goodwill amount was adjusted by $ 435 as a result of a working capital adjustment
[5] Mainly deferred tax liabilities
[6] Mainly attributed to deferred tax liabilities.