Fair Value of Financial Instruments - Contingent Consideration (Details) - USD ($) $ in Thousands	10 Months Ended	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Business Combination, Contingent Consideration [Roll Forward]
Estimated fair value as of June 1, 2018		$ 0	$ 0
Accretion		64	0	$ 0
Remeasurement adjustment		(298)	0	0
Contingent Earn-out Consideration as of March 31, 2019	$ 1,600	1,600	$ 0	$ 0
Fitlosophy, Inc.
Business Combination, Contingent Consideration [Roll Forward]
Estimated fair value as of June 1, 2018	1,600
Fitlosophy, Inc. | Contingent Earn-Out Consideration
Business Combination, Contingent Consideration [Roll Forward]
Estimated fair value as of June 1, 2018	1,600
Accretion	64
Remeasurement adjustment	(298)
Contingent Earn-out Consideration as of March 31, 2019	$ 1,366	$ 1,366