Stock incentive plans (Tables)

3 Months Ended

Mar. 31, 2019

Schedule of stock-based compensation expense


	Three Months Ended
	March 31,
	2019		2018
Network operations	$	506	$	537
Development and technology		303		278
Selling and marketing		529		473
General and administrative		1,006		1,838
Total stock-based compensation expense	$	2,344	$	3,126

Summary of stock option activity


				Weighted-
				Average
		Weighted		Remaining
	Number of	Average		Contract	Aggregate
	Options	Exercise		Life	Intrinsic
	(000’s)	Price		(years)	Value
Outstanding at December 31, 2018	304	$	7.49	3.8	$	3,970
Exercised	(4)	$	2.01
Canceled/forfeited	—	$	—
Outstanding and exercisable at March 31, 2019	300	$	7.55	3.6	$	4,766

Summary of RSU activity


		Weighted Average
	Number of Shares	Grant-Date Fair
	(000’s)	Value
Non-vested at December 31, 2018	3,119	$	8.60
Granted(1)	517	$	23.36
Vested	(2,656)	$	6.58
Canceled/forfeited	(10)	$	25.51
Non-vested at March 31, 2019	970	$	21.80

(1)

The RSUs granted to all of our named executive officers in 2017 were subject to satisfaction of specified service-based and performance-based conditions. The performance objectives were subject to under- or over- achievement on a sliding scale, with a threshold of 50% of the target number of RSUs and a maximum of 150% of the target RSUs. In February 2019, our Compensation Committee determined actual achievement of the 2017 performance-based RSUs resulting in additional RSUs granted of approximately 29,000 at a grant-date fair value of $11.94 per share during the three months ended March 31, 2019.