Condensed Consolidated Balance Sheets (Unaudited) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Current assets:    
Cash and cash equivalents $ 374,131 $ 298,705
Trade receivables, net 299,309 373,993
Inventories, net 386,612 392,559
Deferred income taxes 25,000 23,569
Prepaids and other current assets 38,432 38,314
Total current assets 1,123,484 1,127,140
Property, plant and equipment, net 300,906 309,525
Other assets 11,613 12,586
Total assets 1,436,003 1,449,251
Current liabilities:    
Accounts payable 59,688 53,837
Accrued income taxes 17,570 16,903
Customer prepayments 42,957 71,177
Accrued compensation 17,706 21,527
Other accrued liabilities 23,440 35,198
Total current liabilities 161,361 198,642
Deferred income taxes 4,578 5,417
Total liabilities 165,939 204,059
Commitments and contingencies (Note 7)      
Stockholders' equity:    
Preferred stock, 10,000,000 shares authorized at $0.01 par value (none issued)      
Common stock: 100,000,000 and 50,000,000 shares authorized at $0.01 par value at March 31, 2015 and December 31, 2014, 38,939,097 and 38,932,508 issued and outstanding at March 31, 2015 and December 31, 2014 388 388
Additional paid-in capital 20,224 16,480
Retained earnings 1,332,190 1,278,528
Accumulated other comprehensive losses (82,738) (50,204)
Total stockholders' equity 1,270,064 1,245,192
Total liabilities and stockholders' equity $ 1,436,003 $ 1,449,251