Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2018

Share-Based Compensation

Schedule of activity of parent company under the 2007 Stock Option Plan

						Weighted
						average
		Weighted		Aggregate		remaining
	Number of	average		intrinsic		contractual
(in thousands, except exercise price and years)	options	exercise price		value		term (years)
Outstanding at December 31, 2017	37,673	$	0.79	$	40,875	6.8
Granted	500		1.87
Exercised	(390)		0.71	$	452
Forfeited or expired	(198)		0.77
Outstanding at March 31, 2018	37,585	$	0.80	$	40,204	6.6
Exercisable at March 31, 2018	20,303	$	0.75	$	22,639	6.6
Remaining authorized options available for issue	5,466

Schedule of assumptions used in determining the fair value of stock options granted under the Black-Scholes model

	Three Months Ended
	March 31,
	2018			2017
Risk-free interest rate		1.45	%		1.51	%
Expected volatility		28.9	%		28.9	%
Dividend yield		N/A			N/A
Expected option life (years)		4.00			4.23
Black-Scholes Value of options	$	0.46		$	0.30