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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOW (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Cash flows from operating activities    
Net income / (loss) $ (79,456) $ 60,184
Adjustments to reconcile net loss to net cash provided by operating activities:    
Depreciation and amortization 4,526 4,815
Deferred income taxes 719 1,488
Unrealized foreign exchange losses/(gains) 34,726 (98,006)
Stock options fair value expense 293 864
Other non cash items 2,102 221
Changes in operating assets and liabilities:    
Accounts receivable 138,026 226,070
Inventories 18,534 8,413
Prepayments and other current assets (15,932) (2,318)
Trade accounts payable (41,642) (89,358)
Other accrued liabilities and payables (including taxes) (52,069) (88,607)
Net cash provided by operating activities 9,827 23,766
Cash flows from investing activities    
Purchase of fixed assets (2,814) (1,329)
Proceeds from the disposal of fixed assets 302 127
Net cash used in investing activities (2,512) (1,202)
Cash flows from financing activities    
Borrowings on bank loans and overdraft facility 30,628 8,594
Payment of bank loans, overdraft facility and other borrowings (77,686) (26,872)
Decrease in short term capital leases payable 163 90
Net cash used in financing activities (46,895) (18,188)
Currency effect on brought forward cash balances (1,137) 9,012
Net increase / (decrease) in cash (40,717) 13,388
Cash and cash equivalents at beginning of period 84,729 94,410
Cash and cash equivalents at end of period $ 44,012 $ 107,798