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Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Cash flows from operating activities:    
Net income $ 2,183 $ 16,661
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 10,209 11,118
Amortization of debt costs 360 1,375
Provision for doubtful accounts 2,486 5,224
Deferred income taxes 222 (3,004)
Share-based compensation 3,437 2,738
Gain on sale of Breg, Inc.   (1,040)
Income tax benefit on employee stock-based awards 758  
Excess income tax benefit on employee stock-based compensation (82) (1,156)
Other 2,296 (5,418)
Change in operating assets and liabilities, net of effect of disposition:    
Trade accounts receivable 13,124 (11,482)
Inventories (12,882) 2,270
Escrow receivable   41,537
Prepaid expenses and other current assets 9,343 1,934
Trade accounts payable (3,452) (5,367)
Charges related to U.S. Government resolutions   686
Other current liabilities 8,844 1,539
Long-term assets (1,521)  
Long-term liabilities (1,164) 142
Net cash provided by operating activities 34,161 57,757
Cash flows from investing activities:    
Capital expenditures for property, plant and equipment (12,826) (12,794)
Capital expenditures for intangible assets (651) (214)
Net proceeds from the sale of subsidiary   153,092
Net cash provided by (used in) investing activities (13,477) 140,084
Cash flows from financing activities:    
Net proceeds from issuance of common shares 2,188 13,340
Repayments of long-term debt   (168,695)
Repayment of bank borrowings, net (16) (831)
Changes in restricted cash 721 (25,831)
Repurchase of treasury shares (26,868)  
Excess income tax benefit on employee stock-based awards 82 1,156
Net cash used in financing activities (23,893) (180,861)
Effect of exchange rate changes on cash (476) (98)
Net (decrease) increase in cash and cash equivalents (3,685) 16,882
Cash and cash equivalents at the beginning of the period 31,055 33,207
Cash and cash equivalents at the end of the period $ 27,370 $ 50,089