Share-Based Payments (Tables)

3 Months Ended

Mar. 31, 2017

Stock Option Plan 2007

Share-Based Payments

Schedule of movements of share options outstanding and their related weighted average exercise prices

	2017
Stock Option Plan 2007	Weighted average exercise price in $ per share	Options		Aggregate intrinsic value
Outstanding as of January 1, 2017	7.32	10,996
Granted	—	—
Exercised	7.32	(5,156	)
Forfeited	—	—
Outstanding as of March 31, 2017	7.32	5,840		$	1,112
Vested and exercisable as of March 31, 2017	7.32	5,712		$	1,086

Stock Option Plan 2015

Share-Based Payments

Schedule of movements of share options outstanding and their related weighted average exercise prices

	2017
Stock Option Plan 2015	Weighted average exercise price in $ per share	Options		Aggregate intrinsic value
Outstanding as of January 1, 2017	78.25	179,436
Granted	85.51	102,560
Exercised	—	—
Forfeited	88.00	(9,257	)
Outstanding as of March 31, 2017	80.65	272,739		$	12,255
Vested and exercisable as of March 31, 2017	77.12	62,805		$	3,926

Schedule of inputs to the option pricing method

Input parameters	Granted on February 7, 2017		Granted on March 21, 2017
Grant date share price in $	85.00		110.00
Exercise price in $	85.00		110.00
Expected volatility	68	%	66	%
Expected term of options	2.2 years		2.2 years
Risk-free interest rate	-0.777	%	-0.718	%
Dividend yield	—		—