CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY (Details)	12 Months Ended
Mar. 31, 2020
CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY
Required percentage of net income allocated to statutory surplus reserve	10.00%
Threshold percentage of statutory surplus reserves of the registered capital, used as criteria of allocation requirement	50.00%

Represents the level of the statutory reserve fund balance as a percentage of registered capital for entities incorporated in the People's Republic of China which must be attained before mandatory transfers to the reserve are no longer required.

No definition available.

Name:	hx_ThresholdPercentageOfStatutorySurplusReserveNeedToBeMadeOverEntitiesRegisteredCapital
Namespace Prefix:	hx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration