Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-based Compensation


	Three Months Ended September 30, 2015		Three Months Ended September 30, 2014		Nine Months Ended September 30, 2015		Nine Months Ended September 30, 2014
Stock-based compensation:
Cost of revenue	$	171	$	131	$	569	$	402
Sales and marketing		251		187		585		504
Research, development and engineering		396		363		1,011		1,083
General and administrative		485		688		1,487		1,844
Intellectual property		74		85		205		252

Stock-based compensation expense		1,377		1,454		3,857		4,085
Capitalized to patent costs and software		46		46		137		133

Total stock-based compensation expense	$	1,423	$	1,500	$	3,994	$	4,218

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 September 30, 2015		As of December 31, 2014
Total unrecognized compensation costs	$	10,380	$	11,206

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, 2015 for stock options and restricted stock over weighted average periods through September 2019 as follows:


	Stock Options		Restricted 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, 2015:	Options			Weighted Average Exercise Price		Weighted Average Grant Date Fair Value		Aggregate Intrinsic Value
Outstanding at June 30, 2015		530		$	17.12	$	8.51
Options granted		—			—		—
Options exercised		(20	)		9.64		6.30
Options forfeited or expired		—			—		—

Outstanding at September 30, 2015		510		$	17.41	$	8.59	$	6,699


Nine-months ended September 30, 2015:	Options			Weighted Average Exercise Price		Weighted Average Grant Date Fair Value		Aggregate Intrinsic Value
Outstanding at December 31, 2014		601		$	16.97	$	8.42
Options granted		—			—		—
Options exercised		(91	)		14.47		7.46
Options forfeited or expired		—			—		—

Outstanding at September 30, 2015		510		$	17.41	$	8.59	$	6,699

Exercisable at September 30, 2015		510		$	17.41			$	6,699

Reconciliation of Unvested Balance of Restricted Stock

The following table reconciles the unvested balance of restricted stock:


Three-months ended September 30, 2015:	Number of Shares			Weighted Average Grant Date Fair Value
Unvested balance, June 30, 2015		489		$	23.98
Granted		13		$	37.60
Vested		(52	)	$	24.53
Forfeited		(1	)	$	24.43

Unvested balance, September 30, 2015		449		$	24.30


Nine-months ended September 30, 2015:	Number of Shares			Weighted Average Grant Date Fair Value
Unvested balance, December 31, 2014		502		$	23.09
Granted		132		$	29.37
Vested		(156	)	$	24.80
Forfeited		(29	)	$	23.68

Unvested balance, September 30, 2015		449		$	24.30

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, 2015 and 2014:


	Three Months Ended September 30, 2015		Three Months Ended September 30, 2014		Nine Months Ended September 30, 2015		Nine Months Ended September 30, 2014
Fair value of restricted stock awards vested	$	1,961	$	1,206	$	4,840	$	4,417