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Stock-Based Awards - Schedule of Options Outstanding and Exercisable Range of Exercise Prices (Details) - 2002 Plan and 2012 Plan [Member]
12 Months Ended
Dec. 31, 2018
$ / shares
shares
Range of Exercise Price One [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of Exercise Prices, Lower Range Limit $ 1.67 [1]
Range of Exercise Prices, Upper Range Limit $ 3.20 [1]
Number Outstanding | shares 12,803 [1]
Options Outstanding, Weighted Average Contractual Life (years) 7 years 1 month 13 days
Options Outstanding, Weighted Average Exercise Price $ 2.38 [1]
Number Exercisable | shares 6,810 [1]
Options Exercisable, Weighted Average Exercise Price $ 2.56 [1]
Range of Exercise Price Two [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of Exercise Prices, Lower Range Limit 3.25 [1]
Range of Exercise Prices, Upper Range Limit $ 4.01 [1]
Number Outstanding | shares 1,064 [1]
Options Outstanding, Weighted Average Contractual Life (years) 2 years 3 months 29 days
Options Outstanding, Weighted Average Exercise Price $ 3.46 [1]
Number Exercisable | shares 1,046 [1]
Options Exercisable, Weighted Average Exercise Price $ 3.42 [1]
Range of Exercise Price Three [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of Exercise Prices, Lower Range Limit 2.04 [1]
Range of Exercise Prices, Upper Range Limit $ 6.94 [1]
Number Outstanding | shares 13,867 [1]
Options Outstanding, Weighted Average Contractual Life (years) 6 years 9 months
Options Outstanding, Weighted Average Exercise Price $ 2.44 [1]
Number Exercisable | shares 7,856 [1]
Options Exercisable, Weighted Average Exercise Price $ 2.67 [1]
[1] After adjustment to the applicable exercise prices, number of outstanding and exercisable stock options necessary to maintain the intrinsic value of those awards immediately prior to and following the AgeX Distribution.