6. Deferred Rent (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Deferred Rent Details
Landlord-funded leasehold improvements	$ 1,124,790BLFS_LeaseholdImprovementsGross1	$ 1,047,026BLFS_LeaseholdImprovementsGross1
Less accumulated amortization	(248,531)BLFS_LessAccumulatedAmortization	(133,063)BLFS_LessAccumulatedAmortization
Total (current portion $130,216 and $111,250 at December 31, 2014 and 2013, respectively)	876,259BLFS_LeaseholdImprovements	913,963BLFS_LeaseholdImprovements
Straight line rent adjustment	128,782BLFS_StraightLineRentAdjustments1	89,273BLFS_StraightLineRentAdjustments1
Total deferred rent	$ 1,005,041us-gaap_DeferredRentCreditCurrent	$ 1,003,236us-gaap_DeferredRentCreditCurrent

For a classified balance sheet, the cumulative difference as of the balance sheet date between the payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense, by the lessor or lessee, respectively, within one year of the balance sheet date.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 25

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7501430&loc=d3e39927-112707

Name:	us-gaap_DeferredRentCreditCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant