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Preferred Stock (Details)				12 Months Ended
	Sep. 23, 2016 USD ($)	Aug. 26, 2016 shares	Jun. 03, 2016 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2016 € / shares	Aug. 19, 2016 shares	Dec. 31, 2015 € / shares shares
Class of Stock [Line Items]
Par value per share (EUR per share) | € / shares							€ 0.01		€ 0.01
Common shares issued on conversion of Series A preferred stock (in shares)		52,976,000
Increase in number of common shares of authorized capital (in shares)		52,976,000
Cash payment | $				$ 595,000	$ 0	$ 0
Series A Preferred Stock
Class of Stock [Line Items]
Series A preferred stock, issued (in shares)		0							52,976,000
Series A preferred stock, outstanding (in shares)		0						52,976,000	52,976,000
Par value per share (EUR per share) | € / shares									€ 0.01
Preferred stock dividend rate (percent)					0.25%
Annual dividend paid | $			$ 1,476
Number of votes per preferred share					1
Cash payment | $	$ 600,000

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Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash.

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The cash outflow to reacquire preferred stock originally issued and identified as a security that can be exchanged for another type of financial security. This repurchased stock is held in treasury.

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