Stock-based Compensation Plans and Awards (Tables)

9 Months Ended

Sep. 30, 2018

Stock-based Compensation Plans and Awards

Stock-based Compensation Expense

Stock-based compensation expense related to all employee and non-employee stock-based awards recognized in the condensed consolidated statements of operations was as follows (in thousands):

	Three months ended September 30,				Nine months ended September 30,
	2018		2017		2018		2017
Service costs	$	189	$	155	$	515	$	453
Sales and marketing		292		209		760		586
Product development		603		475		1,762		1,352
General and administrative		1,418		1,343		4,349		4,035
Total stock-based compensation	$	2,502	$	2,182	$	7,386	$	6,426

Stock Options Activity

Stock option activity is as follows (in thousands):

	Number of
	options
	outstanding
Outstanding at December 31, 2017	2,140
Options granted	47
Options exercised	(237)
Options forfeited or cancelled	(30)
Outstanding at September 30, 2018	1,920

Restricted Stock Unit Activity

Restricted stock unit activity is as follows (in thousands):

	Number of
	shares
Unvested at December 31, 2017	1,888
Granted	1,544
Vested	(959)
Forfeited	(205)
Unvested at September 30, 2018	2,268