6. Deferred Rent (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Deferred Rent Details
Landlord-funded leasehold improvements	$ 1,124,790BLFS_LeaseholdImprovementsGross1	$ 1,124,790BLFS_LeaseholdImprovementsGross1
Less accumulated amortization	(280,281)BLFS_LessAccumulatedAmortization	248,531BLFS_LessAccumulatedAmortization
Total	844,509BLFS_LeaseholdImprovements	876,259BLFS_LeaseholdImprovements
Straight line rent adjustment	133,748BLFS_StraightLineRentAdjustments1	128,782BLFS_StraightLineRentAdjustments1
Total deferred rent	$ 978,257us-gaap_DeferredRentCredit	$ 1,005,041us-gaap_DeferredRentCredit

The cumulative difference between the rental 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 over the term of the leased property by the lessor or lessee, respectively.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 25

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=7501430&loc=d3e39896-112707

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