Quarterly report pursuant to Section 13 or 15(d)

Capital Stock, Stock Plans and Stock-Based Compensation - Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Details)

v3.10.0.1
Capital Stock, Stock Plans and Stock-Based Compensation - Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Details) - $ / shares
Jul. 26, 2018
Jan. 18, 2018
Jul. 27, 2017
Jan. 13, 2017
Employee Stock Option Granted [Member]        
Weighted-average fair value per shares     $ 1.88  
Risk -free interest rate [1]     1.98%  
Expected volatility of stock [2]     53.15%  
Dividend yield     0.00%  
Expected option life [3]     6 years  
Outside Director Stock Options Granted [Member]        
Weighted-average fair value per shares $ 3.02 $ 2.55 $ 2.48 $ 2.63
Risk -free interest rate [1] 2.98% 2.62% 2.32% 2.40%
Expected volatility of stock [2] 55.34% 57.29% 57.21% 56.32%
Dividend yield 0.00% 0.00% 0.00% 0.00%
Expected option life [3] 10 years 10 years 10 years 10 years
[1] The risk-free interest rate is based on the U.S. Treasury yield in effect at the grant date over the expected term of the option.
[2] The expected volatility is based on historical volatility from our traded Common Stock over the expected term of the option.
[3] The expected option life is based on historical exercises and post-vesting data.