Shareholders' Equity - (Tables)

12 Months Ended

Dec. 31, 2018

Equity [Abstract]

Schedule of authorized but unissued ordinary shares

We had reserved the following shares of authorized but unissued ordinary shares (in thousands):

	December 31,
	2018	2017
2011 Equity Incentive Plan	17,729	16,026
2007 Employee Stock Purchase Plan	1,126	339
Amended and Restated 2007 Non-Employee Directors Stock Award Plan	453	481
Amended and Restated Directors Deferred Compensation Plan	178	178
2007 Equity Incentive Plan	13	17
Total	19,499	17,041