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Consolidated Statements of Stockholders' Equity Statement - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock
Common Stock
Stock Offering
Additional Paid-in Capital
AOCI Attributable to Parent
Retained Earnings
Treasury Stock
Parent
Common Stock, Shares, Outstanding   16,303            
Stockholders' Equity Attributable to Parent $ 883,551     $ 289,933 $ 98 $ 1,211,076 $ (617,579)  
Common stock, par value $0.001   $ 23            
StockIssuedDuringPeriodSharesStockOptionsSARsExercised   171            
APIC, Share-based Payment Arrangement, Increase for Cost Recognition       23,842       $ 23,842
Proceeds from issuance of common stock 0              
Treasury Stock, Shares, Acquired   217            
Treasury Stock, Value, Acquired, Cost Method             (33,773) (33,773)
Stock Issued During Period, Value, Employee Stock Purchase Plan             3,234 3,234
Stock Issued During Period, Shares, Employee Stock Purchase Plans   41            
Payments of Dividends $ 11,361         (11,361)   (11,361)
Other Comprehensive Income (Loss), Net of Tax 85       85     85
Adjustments to Additional Paid in Capital, Warrant Issued       1,375       1,375
Net income (loss)           (155,255)   (155,255)
Common Stock, Shares, Outstanding   16,240            
Stockholders' Equity Attributable to Parent 736,560     310,628 424 1,073,603 (648,118)  
Common stock, par value $0.001   $ 23            
StockIssuedDuringPeriodSharesStockOptionsSARsExercised   58            
APIC, Share-based Payment Arrangement, Increase for Cost Recognition       4,099       4,099
Other Comprehensive Income (Loss), Net of Tax (241)       (241)     (241)
Adjustments to Additional Paid in Capital, Warrant Issued       423       423
Net income (loss)           (29,143)   (29,143)
Common Stock, Shares, Outstanding   16,298            
Stockholders' Equity Attributable to Parent 711,698     315,150 183 1,044,460 (648,118)  
Common stock, par value $0.001   $ 23            
Common Stock, Shares, Outstanding   16,405            
Stockholders' Equity Attributable to Parent 699,363     329,753 (27) 1,015,622 (646,008)  
Common stock, par value $0.001 $ 23 $ 23            
StockIssuedDuringPeriodSharesStockOptionsSARsExercised   71            
APIC, Share-based Payment Arrangement, Increase for Cost Recognition       $ 10,800       $ 10,800
Proceeds from issuance of common stock 335,139 2 1,553 335,137       335,139
Stock Issued During Period, Value, Employee Stock Purchase Plan             3,831 $ 3,831
Stock Issued During Period, Shares, Employee Stock Purchase Plans   16            
Payments of Dividends $ 0              
Other Comprehensive Income (Loss), Net of Tax 676       676     676
Adjustments to Additional Paid in Capital, Warrant Issued       $ 105       105
Net income (loss)           141,150   141,150
Common Stock, Shares, Outstanding   17,986            
Stockholders' Equity Attributable to Parent 1,147,134     671,893 (125) 1,117,518 (642,177)  
Common stock, par value $0.001   $ 25            
StockIssuedDuringPeriodSharesStockOptionsSARsExercised   59            
APIC, Share-based Payment Arrangement, Increase for Cost Recognition       3,902       3,902
Other Comprehensive Income (Loss), Net of Tax 774       774     774
Net income (loss)           39,254   $ 39,254
Common Stock, Shares, Outstanding   18,045            
Stockholders' Equity Attributable to Parent 1,191,064     $ 675,795 $ 649 $ 1,156,772 $ (642,177)  
Common stock, par value $0.001 $ 25 $ 25