Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2016

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Allocation of Stock-Based Compensation

Stock-based Compensation

	Three		Three		Nine		Nine
	Months		Months		Months		Months
	Ended		Ended		Ended		Ended
	September 30,		September 30,		September 30,		September 30,
	2016		2015		2016		2015
Stock-based compensation:
Cost of revenue	$	196	$	171	$	553	$	569
Sales and marketing	$	265	$	251	$	715	$	585
Research, development and engineering	$	346	$	396	$	1,050	$	1,011
General and administrative	$	568	$	485	$	1,613	$	1,487
Intellectual property	$	80	$	74	$	231	$	205
Stock-based compensation expense	$	1,455	$	1,377	$	4,162	$	3,857
Capitalized to software and patent costs	$	46	$	46	$	121	$	137
Total stock-based compensation expense	$	1,501	$	1,423	$	4,283	$	3,994

Unrecognized Compensation Cost Related to Non-Vested Stock-Based Awards Granted

The following table sets forth total unrecognized compensation cost related to non-vested stock-based awards granted under all equity compensation plans, including stock options and restricted stock:

	As of		As of
	September 30,		December 31,
	2016		2015
Total unrecognized compensation costs	$	10,620	$	9,549

Weighted Average Period for Recognition of Unrecognized Compensation Cost for Stock Options and Restricted Stock

The Company expects to recognize the unrecognized compensation costs as of September 30, 2016 for stock options and restricted stock over weighted average periods through September 2020 as follows:

	Stock	Restricted
	Options	Stock
Weighted average period	0.0 years	1.4 years

Reconciliation of Outstanding Balance of Stock Options

The following table reconciles the outstanding balance of stock options:

Three months ended September 30, 2016:	Options			Weighted Average Exercise Price		Weighted Average Grant Date Fair Value		Aggregate Intrinsic Value
Outstanding at June 30, 2016		458		$	18.29	$	8.79
Options granted		—			—		—
Options exercised		(17	)		9.64		6.30
Options forfeited or expired		—			—		—
Outstanding at September 30, 2016		441		$	18.63	$	8.88	$	8,687

Nine months ended September 30, 2016:	Options			Weighted Average Exercise Price		Weighted Average Grant Date Fair Value		Aggregate Intrinsic Value
Outstanding at December 31, 2015		490		$	17.73	$	8.69
Granted		—			—		—
Exercised		(49	)		9.64		6.94
Forfeited or expired		—			—		—
Outstanding at September 30, 2016		441		$	18.63	$	8.88	$	8,687
Exercisable at September 30, 2016		441		$	18.63			$	8,687

Reconciliation of Unvested Balance of Restricted Stock

The following table reconciles the unvested balance of restricted stock:

Three months ended September 30, 2016:	Numberof Shares			Weighted Average Grant Date Fair Value
Unvested balance, June 30, 2016		470		$	25.59
Granted		14		$	35.38
Vested		(54	)	$	25.50
Forfeited		(4	)	$	28.15
Unvested balance, September 30, 2016		426		$	25.89

Nine months ended September 30, 2016:	Numberof Shares			Weighted Average Grant Date Fair Value
Unvested balance, December 31, 2015		408		$	24.30
Granted		191		$	29.11
Vested		(166	)	$	25.51
Forfeited		(7	)	$	30.14
Unvested balance, September 30, 2016		426		$	25.89

Fair Value of Restricted Stock Awards Vested

The following table indicates the fair value of all restricted stock awards that vested during the three and nine months ended September 30, 2016 and 2015:

	Three		Three		Nine		Nine
	Months		Months		Months		Months
	Ended		Ended		Ended		Ended
	September 30,		September 30,		September 30,		September 30,
	2016		2015		2016		2015
Fair value of restricted stock awards vested	$	1,912	$	1,961	$	5,029	$	4,840