Stock-Based Compensation

9 Months Ended

Sep. 30, 2017

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

F.	Stock-Based Compensation

The Company measures the cost of employee services in exchange for an award of equity instruments based on the grant-date fair value of the award and recognizes the cost over the requisite service period, typically the vesting period.

The Company estimates the fair value of stock options on the grant date using the Black-Scholes-Merton option-pricing model. The Black-Scholes-Merton option-pricing model requires subjective assumptions, including future stock price volatility and expected time to exercise, which greatly affect the calculated values. There is no expected dividend rate. Historical Company information was the basis for the expected volatility assumption as the Company believes that the historical volatility is indicative of expected volatility over the life of the option. The risk-free interest rate is based on the U.S. Treasury zero-coupon rates with a remaining term equal to the expected term of the option.

Restricted stock awards are made at a value equal to the market price of the Company's common stock on the date of the grant.

Compensation expense related to share-based compensation is recognized over the applicable vesting periods. As of September 30, 2017, there was approximately $43,000 of total unrecognized compensation expense related to unvested share-based compensation arrangements that will be recognized over a weighted average period of 1.9 years.