Unaudited Pro Forma Interim Financial Information - Six Months Ended June 30, 2014 and 2013 (Details) (USD $)	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013
Unaudited Pro Forma Interim Financial Information - Six Months Ended June 30, 2014 and 2013 [Abstract]
Gross Profit	$ 2,751,391	$ 2,055,218
Net loss available to common shareholders	$ (25,862,133)	$ (41,904,064)
Net loss per common share - basic and diluted (in dollars per share)	$ (0.41)	$ (0.67)

The pro forma basic and diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

No definition available.

+ Details

Name:	btx_BusinessAcquisitionProFormaEarningsPerShareBasicAndDiluted
Namespace Prefix:	btx_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

+ Details

Name:	us-gaap_BusinessAcquisitionsProFormaRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration