Shareholders' Equity - Share Issuance (Details)	12 Months Ended
	Dec. 31, 2017 USD ($) vote $ / shares shares	Dec. 31, 2016 $ / shares shares
Equity [Abstract]
Authorized share capital | $	$ 5,000,000
Common stock, shares authorized | shares	500,000,000	500,000,000
Common stock par value (in dollars per share) | $ / shares	$ 0.01	$ 0.01
Number of votes per share of common stock | vote	1
Percentage of controlled shares	9.50%
Percentage of voting power held by one shareholder	75.00%