Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Operating Loss Carryforwards [Line Items]
Computed "expected" income tax benefit									$ (3,761)	$ (2,998)
Increase (decrease) in income taxes resulting from:
2013 pre-Separation losses remaining with Harvard Bioscience									0	2,327
Foreign tax rate and regulation differential									40	13
State income tax benefit, net of federal income tax benefit									(663)	(118)
Non-deductible stock-based compensation expense									94	18
Tax credits									(178)	(50)
Change in valuation allowance allocated to income tax expense									4,468	808
Total income taxes	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0