Label	Element	Value
Fair Value, Recurring [Member]
Derivative Liability, Noncurrent	us-gaap_DerivativeLiabilitiesNoncurrent	$ 1,968,000
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Derivative Liability, Noncurrent	us-gaap_DerivativeLiabilitiesNoncurrent	1,968,000
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Derivative Liability, Noncurrent	us-gaap_DerivativeLiabilitiesNoncurrent	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Derivative Liability, Noncurrent	us-gaap_DerivativeLiabilitiesNoncurrent	$ 0
Warrant [Member]
Derivative Liability Expected Volatility	mcrb_DerivativeLiabilityExpectedVolatility	83.00%
Derivative Liability Expected Volatility	mcrb_DerivativeLiabilityExpectedVolatility	82.00%