Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2020

Share Based Compensation [Abstract]

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

	Three Months Ended
	March 31,
	2020		2019
Stock options	$	432	$	260
Nonvested restricted stock awards and restricted stock units		1,264		698
Employee stock purchase plan		-		23
Director stock ownership plan		40		31
Annual incentive plan		2,946		-
Total share-based compensation expense	$	4,682	$	1,012

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

Number of options granted	49,115
Dividend yield	0.99	%
Expected volatility	31.57	%
Risk-free interest rate	0.36	%
Expected term (years)	4.0