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Condensed Consolidated Statements of Income (Loss) (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Sales    
Total Sales $ 114,523 $ 143,791
Cost of Sales    
Total Cost of Sales 62,923 83,179
Gross Profit 51,600 60,612
Selling, general and administrative expenses 26,620 35,132
Research and development expenses 29,859 31,647
Asset impairments 65  
Operating Loss (4,944) (6,167)
Interest and dividend income 356 591
Interest expense (1) (127)
Net investment gain (loss) (10,877) 5,926
Other income, net 1,129 855
Income (Loss) Before Income Taxes (14,337) 1,078
Income tax (expense) benefit 4,368 (308)
Net Income (Loss) $ (9,969) $ 770
Weighted average shares outstanding – basic 47,957 47,782
Weighted average shares outstanding – diluted 47,957 47,853
Earnings (loss) per common share – basic $ (0.21) $ 0.02
Earnings (loss) per common share – diluted $ (0.21) $ 0.02
Network Solutions [Member]    
Sales    
Total Sales $ 97,372 $ 125,822
Cost of Sales    
Total Cost of Sales 51,626 70,734
Gross Profit 45,746 55,088
Services & Support [Member]    
Sales    
Total Sales 17,151 17,969
Cost of Sales    
Total Cost of Sales 11,297 12,445
Gross Profit $ 5,854 $ 5,524