XML 52 R42.htm IDEA: XBRL DOCUMENT v3.21.1

LEASES (Details)	3 Months Ended
	Mar. 31, 2021
Operating Lease [Abstract]
Percentage of increase in annual lease rent	3.00%
Lease expiration date	Dec. 31, 2025
Minimum [Member]
Operating Lease [Abstract]
Lease remaining terms	5 years
Maximum [Member]
Operating Lease [Abstract]
Lease remaining terms	6 years

X

- Definition

Percentage of increase in annual lease rent payment for operating leases for each year.

+ References

No definition available.

+ Details

Name:	btx_LesseeOperatingLeasePercentageOfIncreaseInAnnualLeaseRent
Namespace Prefix:	btx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Date which lease or group of leases is set to expire, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	us-gaap_LeaseExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_LesseeOperatingLeaseDescriptionAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980

+ Details

Name:	us-gaap_LesseeOperatingLeaseRemainingLeaseTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: