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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares
shares in Thousands
Sep. 30, 2016
Dec. 31, 2015
Stockholders' equity:    
Par value (in dollars per share) $ 0.01 $ 0.01
Shares authorized (in shares) 85,000 200,000
Shares issued (in shares) 46,410 46,410
Shares outstanding (in shares) 40,738 40,738
Treasury stock, at cost (in shares) 5,672 5,672