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Net Income (Loss) per Common Share	3 Months Ended
Net Income (Loss) per Common Share	Mar. 31, 2019
Earnings Per Share [Abstract]
Net Income (Loss) per Common Share	Net Income (Loss) per Common Share The Company calculates net income (loss) per share in accordance with FASB Accounting Standards Codification Topic 260, Earnings per Share (Topic 260). Under Topic 260, basic net income (loss) per common share is calculated by dividing net income (loss) by the weighted-average number of common shares outstanding during the reporting period. Diluted net income (loss) per common share reflects the effects of potentially dilutive securities. Shares from stock options and awards, excluded from the calculation of diluted net income (loss) per share because their inclusion would have been anti-dilutive, were $0.3 million for the three months ended April 1, 2018.