CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Harvard Bioscience Net Investment [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance at Dec. 31, 2012	$ 27	$ 0	$ 0	$ 0	$ 27	$ 0
Balance (in shares) at Dec. 31, 2012		0
Contribution of net assets to Harvard Apparatus Regenerative Technology by Harvard Bioscience and issuance of common stock	15,758	77	15,681	0	0	0
Contribution of net assets to Harvard Apparatus Regenerative Technology by Harvard Bioscience and issuance of common stock (in shares)		7,740
Net loss	(8,817)			(1,974)	(6,843)	0
Share based compensation	1,370	0	782	0	588	0
Net funding provided by Harvard Bioscience	6,228	0	0	0	6,228	0
Stock option exercises	3	0	3	0	0	0
Stock option exercises (in shares)		1
Vesting of restricted stock units	0	0	0	0	0	0
Vesting of restricted stock units (in shares)		2
Balance at Dec. 31, 2013	14,569	77	16,466	(1,974)	0	0
Balance (in shares) at Dec. 31, 2013		7,743
Net loss	(11,061)	0	0	(11,061)	0	0
Share based compensation	2,565	0	2,565	0	0	0
Stock option exercises	420	2	418	0	0	0
Stock option exercises (in shares)		106
Vesting of restricted stock units	0	0	0	0	0	0
Vesting of restricted stock units (in shares)		7
Other comprehensive loss	1	0	0	0	0	1
Balance at Dec. 31, 2014	$ 6,494	$ 79	$ 19,449	$ (13,035)	$ 0	$ 1
Balance (in shares) at Dec. 31, 2014		7,856