Summary of Significant Accounting Policies - Narrative (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 € / shares shares	Dec. 31, 2015 $ / shares shares
Accounting Policies [Abstract]
Historical Revenue Percentage	50.00%
Class of Stock [Line Items]
Authorized share capital	$ 5,500,000
Ordinary shares, shares authorized (in shares) | shares	500,000,000	53,178,000	53,178,000
Ordinary shares, nominal value (in usd or euro per share) | (per share)	$ 0.01	€ 0.122
Preferred shares, shares authorized (in shares) | shares	50,000,000	0	0
Preferred shares, nominal value (in usd per share) | $ / shares	$ 0.01		$ 0
Cross-border merger nominal value adjustment	$ 0
Ordinary Shares
Class of Stock [Line Items]
Cross-border merger nominal value adjustment	(5,937,000)
Additional Paid-in Capital
Class of Stock [Line Items]
Cross-border merger nominal value adjustment	$ 5,937,000