Stock-Based Compensation

6 Months Ended

Jun. 30, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-Based Compensation

Stock-Based Compensation

The Company’s Amended and Restated 2013 Equity Incentive Plan (the "Equity Plan") permits the grant of restricted stock awards, stock options, stock appreciation rights, performance units, and other equity-based awards up to an aggregate of 1,700,000 shares of common stock. As of June 30, 2019, there were 895,257 shares available for issuance under the Equity Plan.

During the six months ended June 30, 2019, the Company granted an aggregate of 152,292 shares of restricted stock to employees and non-employee directors with a weighted average grant date fair value of $15.39 per share. Employee restricted stock awards generally vest over a period of two years: one-third immediately on the grant date and the remaining two-thirds in equal amounts on the first two anniversaries following the grant date, subject to continued service to the Company. Non-employee director restricted stock awards vest either immediately upon grant or over a period of one year, subject to continued service to the Company. Unvested restricted stock awards are entitled to receive dividends from their grant date.

During the six months ended June 30, 2019, the Company issued performance-based awards in the form of restricted stock units to certain employees. The performance period for these awards is three years, with a required two-year service period immediately following the expiration of the performance period in order to fully vest. The compensation expense and the effect on the Company’s weighted average diluted shares calculation were immaterial. During the six months ended June 30, 2019, 10,755 shares were issued with a grant date fair value of $15.42 per share due to the partial vesting of performance units awarded to certain employees in 2016.

During the three months ended June 30, 2019 and 2018, the Company recognized $0.5 million and $0.4 million, respectively, of stock-based compensation cost. During the six months ended June 30, 2019 and 2018, the Company recognized $1.5 million and $1.2 million, respectively, of stock-based compensation cost. As of June 30, 2019, there were 144,426 nonvested restricted shares outstanding; the total unrecognized compensation expense related to nonvested restricted shares was $1.5 million, which the Company expects to recognize over the next 21 months.