Gaia, Inc. Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Line Items]
Valuation allowance	$ 14,228				$ 14,228	$ 5,907
Net operating losses	(11,256)	$ (10,449)	$ (6,509)	$ (7,878)	$ (36,092)	(25,141)
Operating loss, expiration date					2037
Tax benefits recorded to additional paid-in capital because of the exercise of stock options					$ 0	$ 800
Federal [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	71,100				71,100
Net operating losses					30,300
State [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	$ 20,000				$ 20,000