LEASE - Lease obligations in future periods (Details) - USD ($)	Dec. 31, 2019	Apr. 01, 2019
Lease obligations
Twelve months ending December 31, 2020	$ 374,112
Twelve months ending December 31, 2021	192,968
Twelve months ending December 31, 2022	124,187
Twelve months ending December 31, 2023	107,729
Twelve months ending December 31, 2024	41,168
Total lease payments	840,164
Less: discount	76,805
Present value of lease liabilities	763,359	$ 247,325
Continuing Operations
Lease obligations
Present value of lease liabilities	630,297
Discontinued operations
Lease obligations
Present value of lease liabilities	$ (133,062)

Amount of lessee's undiscounted obligation for lease payments for operating lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in next fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fifth fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fourth fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in third fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in second fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

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