Stock-Based Compensation Plans

6 Months Ended

Jun. 30, 2019

Stock-Based Compensation Plans [Abstract]

Note 10. Stock-Based Compensation Plans

We account for our stock-based compensation plans in accordance with the provisions of FASB ASC 718, Stock Compensation, which requires that a company measure the cost of employee services received in exchange for an award of equity instruments based on the grant-date fair value of the award. The cost is recognized in the consolidated statement of operations over the period during which an employee is required to provide service in exchange for the award.

Restricted and Performance Stock Grants

As part of the 2016 Omnibus Incentive Plan, we currently grant shares of restricted stock to eligible employees and our independent directors and performance-based stock to eligible employees. Selected executives and other key personnel are granted performance awards whose vesting is contingent upon meeting various performance measures with a retention feature. Performance-based shares are subject to a three-year measuring period and the achievement of performance targets and, depending upon the achievement of such performance targets, they may become vested on the third anniversary of the date of grant. Each period we evaluate the probability of achieving the applicable targets, and we adjust our accrual accordingly. Restricted shares granted to employees become fully vested upon the third anniversary of the date of grant; and for selected key executives, certain additional restricted share grants vest 25% upon the attainment of age 60, 25% upon the attainment of age 63 and become fully vested upon the attainment of age 65. Restricted shares granted to directors become fully vested upon the first anniversary of the date of grant. Restricted and performance shares issued to certain key executives and directors are subject to a one or two year holding period upon the lapse of the three year vesting period. Forfeitures on restricted stock grants are estimated at 5% for employees and 0% for executives and directors, respectively, based on our evaluation of historical and expected future turnover.

Our restricted and performance-based share activity was as follows for the six months ended June 30, 2019:

	Shares			Weighted Average Grant Date Fair Value Per Share
Balance at December 31, 2018		870,041		$	34.59
Granted		8,000			40.11
Vested		(36,889	)		32.72
Forfeited		(8,975	)		44.27
Balance at June 30, 2019		832,177		$	34.62

We recorded compensation expense related to restricted shares and performance-based shares of $3.4 million ($2.5 million, net of tax) and $3.3 million ($2.5 million, net of tax) for the six months ended June 30, 2019 and 2018, respectively. The unamortized compensation expense related to our restricted and performance-based shares was $12.2 million at June 30, 2019, and is expected to be recognized as they vest over a weighted average period of 4.1 years and 0.8 years for employees and directors, respectively.