Stock Based Compensation (Tables)

3 Months Ended

Mar. 31, 2020

Share-based Payment Arrangement [Abstract]

Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

During the three months ended March 31, 2020, the Company made the following awards of time vested restricted stock:

Date	Shares Granted	Plan	Grant Date Fair Value Per Share		Vesting Period
2/27/2020	46,550	2005 Employee Stock Plan	$	70.24	Ratably over 5 years from grant date

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The Company did not grant any awards of options to purchase shares of common stock during the three months ended March 31, 2020.