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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 $ 75,517 $ 8,520
Adjustments to reconcile net income to net cash provided (used) by operating activities:    
Depreciation and amortization 29,362 25,044
Amortization of debt issuance costs 2,473 1,841
Amortization of debt discount 2,076  
Deferred income taxes 9,463 6,303
Stock-based compensation expense 3,037 1,892
Undistributed equity in loss of affiliates 871 1,130
Other 52 1,402
Changes in operating assets and liabilities before effects of business combinations:    
Accounts receivable (6,509) (25,450)
Inventories 29,018 66,006
Derivative financial instruments (26,232) (3,896)
Prepaid expenses and other assets 1,599 6,323
Accounts payable and accrued liabilities 2,461 (18,935)
Income taxes payable 24,035 (1,497)
Unearned revenues 2,854 1,237
Other 936 (136)
Net cash used by operating activities 151,013 69,784
Cash flows from investing activities:    
Purchases of property and equipment (28,935) (4,948)
Acquisition of businesses, net of cash acquired (23,900) (15,305)
Distributions from (investments in) unconsolidated subsidiaries (3,277) (803)
Net cash used by investing activities (56,112) (21,056)
Cash flows from financing activities:    
Proceeds from the issuance of long-term debt 443,767 39,700
Payments of principal on long-term debt (419,699) (72,635)
Proceeds from short-term borrowings 1,782,974 1,658,400
Payments on short-term borrowings (1,822,904) (1,726,284)
Payment of cash dividends (2,893)  
Change in restricted cash (12,084) 12,728
Payments of loan fees (6,286) (1,936)
Proceeds from exercises of stock options 3,576 473
Net cash used by financing activities (33,549) (89,554)
Net change in cash and cash equivalents 61,352 (40,826)
Cash and cash equivalents, beginning of period 272,027 254,289
Cash and cash equivalents, end of period 333,379 213,463
Supplemental disclosures of cash flow:    
Cash paid for income taxes 7,790 1,831
Cash paid for interest 18,117 16,072
Supplemental noncash investing and financing activities:    
Common stock issued for conversion of 5.75% Notes $ 89,950