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Condensed Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Cash flows from operating activities:    
Net income (loss) $ 23,221 $ (25,843)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
Depreciation and amortization 11,018 11,324
Amortization of debt costs 1,375 643
Provision for doubtful accounts 5,324 4,545
Deferred income taxes (1,653) (2,680)
Share-based compensation 3,000 3,997
Provision for inventory obsolescence 836 2,116
Gain on sale of Breg, Inc. (1,040)  
Excess tax benefit on non-qualified stock options (1,156) (1,004)
Other (6,060) 335
Change in operating assets and liabilities, net of effect of disposition:    
Trade accounts receivable (24,437) (5,353)
Inventories 2,247 (12,423)
Escrow receivable 41,537 (326)
Prepaid expenses and other current assets 335 3,704
Trade accounts payable (4,391) (2,312)
Charges related to U.S. Government resolutions 1,364 46,000
Other current liabilities 6,236 680
Net cash provided by operating activities 57,756 23,403
Cash flows from investing activities:    
Capital expenditures for property, plant and equipment (12,794) (10,963)
Capital expenditures for intangible assets (214) (335)
Payment made in connection with acquisition   (5,250)
Net proceeds from the sale of Breg, Inc. 153,092  
Net cash provided by (used in) investing activities 140,084 (16,548)
Cash flows from financing activities:    
Net proceeds from issuance of common shares 13,341 13,453
Repayments of long-term debt (168,695) (2,500)
Payment of refinancing fees   (758)
Repayment of bank borrowings, net (831) (1,653)
Changes in restricted cash (25,831) (2,285)
Cash payment for purchase of minority interest in subsidiary   (517)
Excess tax benefit on non-qualified stock options 1,156 1,004
Net cash (used in) provided by financing activities (180,860) 6,744
Effect of exchange rate changes on cash (98) 325
Net increase in cash and cash equivalents 16,882 13,924
Cash and cash equivalents at the beginning of the period 33,207 13,561
Cash and cash equivalents at the end of the period $ 50,089 $ 27,485