Shareholders' Equity

6 Months Ended

Jun. 30, 2018

Shareholders' Equity [Abstract]

Shareholders' Equity

Note 14.  Shareholders' Equity

Under the Company's long-term incentive plans, key members of management may be issued restricted stock units ("RSUs") each year based upon the annual financial performance of the Company and its subsidiaries. The number of RSUs granted to employees each year is determined based upon the performance of individual subsidiaries and consolidated annual financial performance.  Generally, for RSUs granted through 2016, each award will vest at the end of five years from the date of grant, or at the time a recipient retires after reaching age 65, if earlier. Awards granted in 2017 and thereafter will vest at the end of three years from the date of grant or at the time a recipient retires after reaching age 65, if earlier.  Additional RSUs are granted to the Company's outside directors under the Company's Non-Employee Directors Compensation Plan with a one-year vesting period.

A total of 32 and 30 RSUs vested during the six-month periods ended June 30, 2018 and 2017, respectively.  The Company withheld 8 shares due to statutory payroll tax withholding requirements upon the vesting of the RSUs during the first six month periods in both 2018 and 2017, and used Company funds to remit the related required minimum withholding taxes to the various tax authorities.  The vesting date fair value of the RSUs that vested during the first six months of 2018 and 2017 was $1,853 and $1,975, respectively.  The grant date fair value of the RSUs granted during the first six months of 2018 and 2017 was $3,553 and $5,399, respectively.  Compensation expense of $1,019 and $1,498 was recorded in the six-month periods ended June 30, 2018 and 2017, respectively, to reflect the fair value of RSUs granted (or anticipated to be granted for 2018 performance) to employees amortized over the portion of the vesting period occurring during the periods.