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Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Jun. 30, 2013
Dec. 31, 2012
Sep. 30, 2012
Dec. 31, 2011
Current assets:          
Cash and cash equivalents $ 22,219   $ 31,055 $ 53,572 $ 33,207
Restricted cash 22,732   21,314    
Trade accounts receivable, less allowance for doubtful accounts of $11,460 and $13,543 at September 30, 2013 and December 31, 2012, respectively 75,252   107,312    
Inventories 100,204   83,373    
Deferred income taxes 34,053   33,450    
Prepaid expenses and other current assets 27,313   34,079    
Total current assets 281,773   310,583    
Property, plant and equipment, net 55,762   53,835    
Patents and other intangible assets, net 9,821   7,290    
Goodwill 55,405 72,758 74,388   73,094
Deferred income taxes 19,911   18,881    
Other long-term assets 7,386   7,920    
Total assets 430,058   472,897    
Current liabilities:          
Trade accounts payable 14,710   22,575    
Other current liabilities 51,308   39,610    
Total current liabilities 66,018   62,185    
Long-term debt 20,000   20,000    
Deferred income taxes 12,834   11,456    
Other long-term liabilities 12,149   11,424    
Total liabilities 111,001   105,065    
Contingencies (Note 16)            
Shareholders' equity:          
Common shares $0.10 par value; 50,000,000 shares authorized; 18,101,476 and 19,339,329 issued and outstanding as of September 30, 2013 and December 31, 2012, respectively 1,810   1,934    
Additional paid-in capital 215,081   246,306    
Retained earnings 97,208   114,847    
Accumulated other comprehensive income 4,958   4,745    
Total shareholders' equity 319,057   367,832    
Total liabilities and shareholders' equity $ 430,058   $ 472,897