Income Taxes - Components of Income (Loss) from Operations Before Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Taxes [Line Items]
United States	$ 10,222	$ 14,915	$ 10,269
Income (Loss) from operations before taxes	11,291	(17,255)	(22,481)
Republic of Ireland and the United Kingdom
Income Taxes [Line Items]
Income / (Loss) Before Taxes, Foreign	(4,368)	$ (32,170)	$ (32,750)
Other
Income Taxes [Line Items]
Income / (Loss) Before Taxes, Foreign	$ 5,437