Stock-Based Compensation Plans (Tables)

9 Months Ended

Sep. 30, 2019

Share-based Payment Arrangement, Noncash Expense [Abstract]

Schedule of components of stock compensation expense

The components of stock-based compensation expense for the three and nine months ended September 30, 2019 and 2018 were as follows:

	Three months ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
	(in thousands)				(in thousands)
2007 Stock Incentive Plan	$	1,099	$	1,392	$	3,501	$	3,957
2018 Stock Incentive Plan	1,071		—		2,046		—
Employee Stock Purchase Plan	31		27		41		47
Total Stock Compensation Expense	$	2,201	$	1,419	$	5,588	$	4,004

Summary of restricted stock activity

The following table summarizes restricted stock activity during the nine months ended September 30, 2019:

	Shares
Restricted stock at December 31, 2018	417,890
Shares granted	279,400
Shares forfeited	(2,666	)
Shares vested	(186,957	)
Restricted stock at September 30, 2019	507,667