Share-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	6 Months Ended	12 Months Ended
	Apr. 30, 2015	Jun. 30, 2017	Dec. 31, 2016
Restricted Stock Units (RSUs)
Number of Options
Granted (in shares)	7,000,000
Parent Issuer UHS | Options
Number of Options
Outstanding at the beginning of the period (in shares)		36,973,000
Granted (in shares)		723,000
Exercised (in shares)		(41,000)
Forfeited or expired (in shares)		(378,000)
Outstanding at the end of the period (in shares)		37,277,000	36,973,000
Exercisable at the end of the period (in shares)		17,764,000
Remaining authorized options available for issue		6,245,000
Weighted average exercise price
Outstanding at the beginning of the period (in dollars per share)		$ 0.77
Granted (in dollars per share)		1.19
Exercised (in dollars per share)		0.71
Forfeited or expired (in dollars per share)		0.79
Outstanding at the end of the period (in dollars per share)		0.78	$ 0.77
Exercisable at the end of the period (in dollars per share)		$ 0.73
Aggregate intrinsic value
Outstanding		$ 15,428	$ 9,315
Exercisable		8,143
Exercised		$ 20
Weighted average remaining contractual term
Outstanding		7 years 4 months 24 days	7 years 9 months 18 days
Exercisable		7 years 4 months 24 days