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

Fair Value Measurements - Summary of Marketable Securities by Security Type (Detail)

v3.20.1

Fair Value Measurements - Summary of Marketable Securities by Security Type (Detail) - USD ($) $ in Thousands	Jan. 31, 2020	Jan. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 4,564	$ 10,364
Gross Unrealized Gains	53	17
Gross Unrealized Losses		(22)
Fair Value	4,617	10,359
U.S. Treasury Notes and Bonds [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	3,310	7,055
Gross Unrealized Gains	50	17
Fair Value	3,360	7,072
U.S. Agency Bonds [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost		1,001
Gross Unrealized Losses		(9)
Fair Value		992
Corporate Bonds [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	1,254	2,308
Gross Unrealized Gains	3
Gross Unrealized Losses		(13)
Fair Value	$ 1,257	$ 2,295

- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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