The following table presents a reconciliation of the beginning and ending balances in Total shareholders' deficit for the three months ended March 31, 2019 (in thousands):



	Euro Deferred Shares			Ordinary Shares		Additional Paid-in Capital			Accumulated Deficit			Accumulated Other Comprehensive Loss			Total Shareholders' Deficit
BALANCE, DECEMBER 31, 2018, PRIOR TO THE ADOPTION OF ASC 842 (1)	$	46		$	22	$	8,855,810		$	(9,124,932	)	$	(229,229	)	$	(498,283	)
Effect of adopting ASC 842 (1)	—			—		—			(4,646		)	—			(4,646		)
BALANCE, JANUARY 1, 2019	$	46		$	22	$	8,855,810		$	(9,129,578	)	$	(229,229	)	$	(502,929	)
Net loss	—			—		—			(18,573		)	—			(18,573		)
Other comprehensive income	—			—		—			—			4,730			4,730
Compensation related to share-based awards	—			—		24,733			—			—			24,733
Exercise of options	—			—		4			—			—			4
Tax withholding for restricted shares	—			—		(2,414		)	—			—			(2,414		)
Other	(1		)	—		—			—			—			(1		)
BALANCE, MARCH 31, 2019	$	45		$	22	$	8,878,133		$	(9,148,151	)	$	(224,499	)	$	(494,450	)

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(1)	Refer to Note 2. Summary of Significant Accounting Policies for further description of ASC 842.

The following table presents a reconciliation of the beginning and ending balances in Total shareholders' equity (deficit) for the three months ended March 31, 2018 (in thousands):



	Euro Deferred Shares		Ordinary Shares		Additional Paid-in Capital			Accumulated Deficit			Accumulated Other Comprehensive Loss			Total Shareholders' Equity (Deficit)
BALANCE, DECEMBER 31, 2017, PRIOR TO THE ADOPTION OF ASC 606 (1)	$	48	$	22	$	8,791,170		$	(8,096,539	)	$	(209,821	)	$	484,880
Effect of adopting ASC 606 (1)	—		—		—			3,076			—			3,076
BALANCE, JANUARY 1, 2018	$	48	$	22	$	8,791,170		$	(8,093,463	)	$	(209,821	)	$	487,956
Net loss	—		—		—			(505,489		)	—			(505,489		)
Other comprehensive loss	—		—		—			—			(5,797		)	(5,797		)
Compensation related to share-based awards	—		—		17,890			—			—			17,890
Tax withholding for restricted shares	—		—		(1,642		)	—			—			(1,642		)
Other	1		—		(12		)	—			—			(11		)
BALANCE, MARCH 31, 2018	$	49	$	22	$	8,807,406		$	(8,598,952	)	$	(215,618	)	$	(7,093	)

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(1)

The Company adopted ASC 606 on January 1, 2018 using the modified retrospective method for all revenue-generating contracts, including modifications thereto, that were not completed contracts at the date of adoption. As a result of adopting ASC 606, the Company recorded a net decrease of $3.1 million to its accumulated deficit at January 1, 2018, representing the cumulative impact of adopting ASC 606.