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Condensed Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net income (loss) $ (7,449) $ 134,146
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Provision for doubtful accounts receivable (198) 1,325
Share-based compensation expense 1,006 1,479
Depreciation and amortization 1,038 11,947
Amortization of deferred financing costs 262  
(Gain) loss on sale or disposal of assets 1,760 (135,051)
(Gain) loss on sale of investments (437)  
Accretion of debt discount 576 64
Change in fair value of Contingent Value Rights   (14,904)
Deferred income taxes 1 (156)
Unrealized foreign currency transaction (gain) loss on intercompany and foreign debt (125) (134)
Changes in assets and liabilities, net of acquisitions:    
(Increase) decrease in accounts receivable 11,936 (4,700)
(Increase) decrease in costs and recognized earnings in excess of billings on uncompleted contracts 1,389  
(Increase) decrease in inventories (2,503)  
(Increase) decrease in prepaid expenses and other current assets 6,241 (154)
(Increase) decrease in other assets 929 2,195
Increase (decrease) in accounts payable 6,304 (968)
Increase (decrease) in accrued interconnection costs (2,896) (737)
Increase (decrease) in accrued payroll and employee benefits 728  
Increase (decrease) in accrued expenses, other current liabilities and other liabilities, net (1,069) (4,441)
Increase (decrease) in billings in excess of costs and recognized earnings on uncompleted contracts (7,766)  
Increase (decrease) in accrued income taxes (1,291) 230
Increase (decrease) in accrued interest 634 908
Net cash provided by (used in) operating activities 9,070 (8,951)
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchase of property, plant and equipment (663) (9,955)
Sale of property and equipment and other assets 80 6
Sale of investments, net 423  
Cash from disposition of business, net of cash disposed   169,569
Cash paid for business acquisitions, net of cash acquired (85,627) (397)
Purchase of noncontrolling interest (5,000)  
Decrease in restricted cash   222
Net cash (used in) provided by investing activities (90,787) 159,445
CASH FLOWS FROM FINANCING ACTIVITIES:    
Proceeds from long-term obligations 123,412  
Principal payments on long-term obligations (57,703) (123)
Payment of fees on restructuring of debt (812)  
Proceeds from sale of common stock, net 6,000  
Proceeds from sale of preferred stock, net 29,075  
Proceeds from the exercise of warrants and stock options 14,368 199
Payment of dividend equivalents (551) (828)
Taxes paid in lieu of shares issued for share-based compensation (41) (837)
Net cash provided by (used) in financing activities 113,748 (1,589)
EFFECTS OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS (197) (924)
NET CHANGE IN CASH AND CASH EQUIVALENTS 31,834 147,981
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD 8,997 23,197
CASH AND CASH EQUIVALENTS, END OF PERIOD 40,831 171,178
SUPPLEMENTAL CASH FLOW INFORMATION:    
Cash paid for interest 194 5,596
Cash paid for taxes 2,311 201
Non-cash investing and financing activities:    
Capital lease additions   $ 148