Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2019

Share-based Payment Arrangement, Noncash Expense [Abstract]

Schedule of Information with respect to stock options

The below table presents information with respect to stock options under the 2015 Plan and the 2005 Plan:

	No. of Shares  (in thousands)		Weighted Average Exercise Price		Aggregate  Intrinsic Value (in thousands)
Outstanding at December 31, 2018	678		$	7.89	$	12,605
Options granted	122		24.87
Options exercised	(256	)	5.60
Forfeited and canceled	(144	)	7.18
Expired	—		—
Outstanding at December 31, 2019	400		$	14.50
Vested and expected to vest at December 31, 2019	376		$	9.81
Total shares exercisable as of December 31, 2019	152		$	9.05
Shares remaining available for grant	1,100

Schedule of assumptions for fair value of options at the date of the grant

The fair value of options at the date of the grant was estimated using the Black-Scholes model with the following assumptions for the respective period ending December 31:

	2019		2018
Expected option life	3.0 years		3.7 years
Weighted average risk-free interest rate	2.0	%	2.2	%
Weighted average expected volatility	35	%	36	%
Expected dividend yield	0	%	0	%

Schedule of share-based compensation by exercise price range

Stock options outstanding at December 31, 2019 are summarized as follows:

Range of  Exercise Prices	Number Outstanding (in thousands)	Weighted Average  Remaining Life	Weighted Average Exercise Price
$4.06 - $24.87	400	7.97 years	$	14.50

Schedule of activity with respect to non-vested stock options

Current year activity with respect to the Company’s non-vested restricted stock awards is as follows:

Non-vested restricted stock awards	Shares (in thousands)		Weighted Average grant- date fair value
Balance at January 1, 2019	193		$	9.88
Granted	225		24.77
Vested	(13	)	13.32
Forfeited and canceled	(53	)	24.18
Balance at December 31, 2019	352		$	23.08