Stockholders' Equity (Notes)

6 Months Ended

Mar. 31, 2020

Stockholders' Equity Attributable to Parent [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

Stockholders' Equity and Stock-Based Compensation

Stockholders' Equity

The Company has an effective shelf registration statement filed with the Securities and Exchange Commission (SEC) in September 2018 registering $500 million of equity securities. At March 31, 2020, $394.3 million remains available for issuance under the shelf registration statement.

Restricted Stock Units (RSUs)

The Company’s Stock Incentive Plan provides for the granting of stock options and restricted stock units to executive officers, other key employees and non-management directors. Restricted stock unit awards may be based on performance (performance-based) or on service over a requisite time period (time-based). Performance-based and time-based RSU equity awards represent the contingent right to receive one share of the Company’s common stock per RSU if the vesting conditions and/or performance criteria are satisfied. The RSUs have no voting rights until vested.

During the three months ended March 31, 2020, a total of 175,325 time-based RSUs were granted. The weighted average grant date fair value of these equity awards was $16.01 per unit, and they vest annually in equal installments over periods of three to five years. Total stock-based compensation expense related to the Company's restricted stock units for the three and six months ended March 31, 2020 was $0.8 million and $1.3 million, respectively, and in both periods includes $0.5 million of stock-based compensation expense related to employees that were retirement eligible on the date of grant.