Share-Based Compensation (Details 3) - $ / shares	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Share-based Payment Arrangement [Abstract]
Number of stock options exercised	0	57,036	0	213,048
Weighted average exercise price	$ 0.00	$ 1.77	$ 0.00	$ 1.92

Number of share options (or share units) exercised during the current period.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration