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Statement of Changes in Stockholders' Equity (Deficit) (USD $)
Common Stock
Additional Paid-In Capital
Accumulated Earnings (Deficit)
Total
Beginning Balance, Amount at Dec. 31, 2012 $ 18,746us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 3,375,116us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ (2,697,399)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
$ 696,463us-gaap_StockholdersEquity
Beginning Balance, Shares at Dec. 31, 2012 18,745,706us-gaap_SharesIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common stock, net of issuance costs, Amount 18,312us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
3,551,056us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   3,569,368us-gaap_StockIssuedDuringPeriodValueNewIssues
Issuance of common stock, net of issuance costs, Shares 18,312,341us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common stock warrants   1,616,062us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   1,616,062us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued
Issuance of common stock warrants in exchange for consulting services   282,901us-gaap_AdjustmentsToAdditionalPaidInCapitalOther
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   282,901us-gaap_AdjustmentsToAdditionalPaidInCapitalOther
Cashless exercise of common stock options, Amount 13BTHE_CashlessExerciseOfCommonStockOptionsAmount
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
(13)BTHE_CashlessExerciseOfCommonStockOptionsAmount
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
     
Cashless exercise of common stock options, Shares 13,104BTHE_CashlessExerciseOfCommonStockOptionsShares
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common stock in exchange for consulting services, Amount 291us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
226,775us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   227,066us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
Issuance of common stock in exchange for consulting services, Shares 291,009us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Stock based compensation   1,554,913us-gaap_ShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   1,554,913us-gaap_ShareBasedCompensation
Net loss     (4,601,503)us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
(1,484,115)us-gaap_NetIncomeLoss
Ending Balance, Amount at Dec. 31, 2013 37,362us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
10,606,810us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
(7,298,902)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
3,345,270us-gaap_StockholdersEquity
Ending Balance, Shares at Dec. 31, 2013 37,362,160us-gaap_SharesIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common stock, net of issuance costs, Amount 833us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
373,916us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   374,749us-gaap_StockIssuedDuringPeriodValueNewIssues
Issuance of common stock, net of issuance costs, Shares 833,340us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common stock warrants   161,087us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   161,087us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued
Cashless exercise of common stock options, Amount 79BTHE_CashlessExerciseOfCommonStockOptionsAmount
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
(79)BTHE_CashlessExerciseOfCommonStockOptionsAmount
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
     
Cashless exercise of common stock options, Shares 79,016BTHE_CashlessExerciseOfCommonStockOptionsShares
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common stock in exchange for consulting services, Amount 233us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
130,758us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   130,991us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
Issuance of common stock in exchange for consulting services, Shares 233,000us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Stock based compensation   762,005us-gaap_ShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   762,005us-gaap_ShareBasedCompensation
Exercise of common stock options, Amount 5us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
495us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   500us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
Exercise of common stock options, Shares 5,000us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Net loss     (4,699,939)us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
(4,699,939)us-gaap_NetIncomeLoss
Ending Balance, Amount at Dec. 31, 2014 $ 38,512us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 12,034,992us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ (11,998,841)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
$ 74,663us-gaap_StockholdersEquity
Ending Balance, Shares at Dec. 31, 2014 38,512,516us-gaap_SharesIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember