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) - Outside Director Stock Options Granted [Member] - $ / shares
Jan. 18, 2018
Jan. 13, 2017
Weighted-average fair value per shares $ 2.55 $ 2.63
Risk -free interest rate [1] 2.62% 2.40%
Expected volatility of stock [2] 57.29% 56.32%
Dividend yield 0.00% 0.00%
Expected option life [3] 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.