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Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Cash flows from operating activities:      
Net (loss) income $ (25,515) $ 42,838 $ (18,110)
Adjustments to reconcile net (loss) income to net cash provided by operating activities:      
Depreciation and amortization 22,659 20,580 23,017
Amortization of debt costs 720 1,737 1,239
Provision for doubtful accounts 6,003 10,572 12,936
Deferred income taxes (1,986) (1,252) (52)
Share-based compensation 6,267 6,303 6,648
Impairment of goodwill 19,193    
Gain on sale of Breg, Inc., net of tax   (1,345)  
Excess income tax benefit on employee stock-based awards (82) (1,020) (1,737)
Income tax benefit (expense) on employee stock-based awards 795 2,910  
Other 4,442 4,136 4,491
Changes in operating assets and liabilities, net of effect of dispositions:      
Trade accounts receivable 25,747 (18,438) 293
Inventories (6,626) (2,495) (12,624)
Escrow receivable   41,537 (32,562)
Prepaid expenses and other current assets 6,791 (15,577) 2,829
Trade accounts payable (2,280) 4,575 2,322
Charges related to U.S. Government resolutions   (83,178) 87,825
Other current liabilities 8,018 (5,729) 2,695
Other long-term assets 4,296 3,416 (17,307)
Other long-term liabilities (1,561) 616 2,878
Net cash provided by operating activities 66,881 10,186 64,781
Cash flows from investing activities:      
Capital expenditures for property, plant and equipment (24,787) (27,994) (24,965)
Capital expenditures for intangible assets (4,891) (780) (793)
Payment made in connection with acquisition     (5,250)
Net proceeds from sale of Breg Inc.   153,773  
Net cash (used in) provided by investing activities (29,678) 124,999 (31,008)
Cash flows from financing activities:      
Net proceeds from issuance of common shares 3,450 25,586 20,113
Payment of refinancing fees and debt issuance costs     (758)
Repayments of long-term debt (16) (188,695) (7,500)
Repayment of bank borrowings, net   (1,297) (2,561)
Changes in restricted cash (2,375) 25,799 (24,178)
Purchase of common stock (39,494)    
Cash payment for purchase of minority interest in subsidiary     (517)
Excess income tax benefit on employee stock-based awards 82 1,020 1,737
Net cash used in financing activities (38,353) (137,587) (13,664)
Effect of exchange rate changes on cash 581 250 (463)
Net (decrease) increase in cash and cash equivalents (569) (2,152) 19,646
Cash and cash equivalents at the beginning of the year 31,055 33,207 13,561
Cash and cash equivalents at the end of the year 30,486 31,055 33,207
Cash paid during the year for:      
Interest 2,046 4,569 17,088
Income taxes $ 8,773 $ 18,268 $ 26,227