Nature of Business (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Nov. 26, 2018
Numerator for (loss) income per common share calculation:
Net (loss) income attributable to Hemisphere Media Group, Inc.	$ (6,286)		$ (6,682)	$ 27,072	$ (16,110)
Denominator for (loss) income per common share calculation:
Weighted-average common shares, basic	39,641		39,444	39,511	39,378
Effect of dilutive securities
Stock options and restricted stock				389
Weighted-average common shares, diluted	39,641		39,444	39,900	39,378
(Loss) income per share attributable to Hemisphere Media Group, Inc.
Basic	$ (0.16)		$ (0.17)	$ 0.69	$ (0.41)
Diluted	$ (0.16)		$ (0.17)	$ 0.68	$ (0.41)
Shares excluded from the computation of diluted income (loss) per common share	1,600,000		3,900,000	2,100,000	2,800,000
Outstanding awards excluded from computation of diluted loss per share	400,000		0.0		300,000
Snap Global. LLC
Nature of business
Equity interest acquired (as a percent)						75.00%
PANTAYA
Nature of business
Equity interest owned prior to transaction (in percent)		25.00%
Purchase price		$ 123,605
Equity interest acquired (as a percent)		75.00%