Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2019

Accounting Policies [Abstract]

Summary of stock-based compensation cost charged against income

Stock-based compensation expense for the three and nine months ended September 30, 2019 and 2018 is as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
	(Unaudited)
Instructional costs and services	$	404	$	418	$	1,213	$	1,206
Selling and promotional	207		173		600		435
General and administrative	1,101		1,493		3,218		3,883
Stock-based compensation expense in operating income	$	1,712	$	2,084	$	5,031	$	5,524