Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2020

Accounting Policies [Abstract]

Summary of stock-based compensation cost charged against income

Stock-based compensation expense for the three and six months ended June 30, 2020 and 2019 is as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
	(Unaudited)				(Unaudited)
Instructional costs and services	$	402	$	406	$	880	$	809
Selling and promotional	218		199		476		393
General and administrative	953		1,025		1,967		2,117
Stock-based compensation expense in operating income	$	1,573	$	1,630	$	3,323	$	3,319