Equity (Tables)

12 Months Ended

Dec. 31, 2017

Equity Awards, Options

1. Options

	Year ended December 31, 2017
	Number			Weighted average exercise price ($)		Weighted average remaining contractual term (years)		Aggregate intrinsic value ($ in thousands)
Outstanding at beginning of year		776,579			12.83
Changes during the year:
Granted		8,024			32.87
Exercised		(294,725	)		11.98
Forfeited or expired		(13,749	)		14.35
Outstanding at end of year		476,129			13.65		3.08		17,421
Exercisable at end of year		370,538			12.33		2.74		14,046

Equity Awards, RSUs

3. RSUs

	Year ended December 31, 2017
	Number			Weighted average grant date fair value ($)
Outstanding at beginning of year		883,759			22.58
Changes during the year:
Awarded		366,266			45.60
Vested		(252,675	)		18.47
Forfeited		(54,259	)		21.66
Outstanding at end of year		943,091			32.69

Non Employee [Member]

Equity Awards, Options

1. Options

	Year ended December 31, 2017
	Number			Weighted average exercise price ($)		Weighted average remaining contractual term (years)		Aggregate intrinsic value ($ in thousands)
Outstanding at beginning of year		31,551			12.72
Changes during the year:
Exercised		(18,989	)		11.93
Forfeited or expired		(1,200	)		10.75
Outstanding at end of year		11,362			14.23		3.45		410
Exercisable at end of year		7,229			12.86		3.09		271

Equity Awards, RSUs

2. RSUs

	Year ended December 31, 2017
	Number			Weighted average grant date fair value ($)
Outstanding at beginning of year		16,682			22.03
Changes during the year:
Awarded		1,250			52.69
Vested		(5,598	)		16.94
Outstanding at end of year		12,334			27.39