SeaChange International, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Summary of Significant Accounting Policies - Additional Information (Detail)

v3.19.1

Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended
	Apr. 30, 2019 USD ($) Customer	Jan. 31, 2019 Customer	Apr. 30, 2018 Customer	Feb. 01, 2019 USD ($)
Significant Accounting Policies [Line Items]
Accumulated goodwill impairment charges	$ 54,800,000
Impairment costs	0
Operating lease right-of-use assets	1,964,000			$ 1,700,000
Operating lease liability	$ 1,964,000			$ 1,700,000
Hardware and Software Maintenance [Member]
Significant Accounting Policies [Line Items]
Commissions and special incentive payments amortized period	5 years
Maximum [Member]
Significant Accounting Policies [Line Items]
Contractual customer payment terms for goods or service.	1 year
Credit Concentration Risk [Member] \| Accounts Receivable [Member]
Significant Accounting Policies [Line Items]
Number of customers accounted \| Customer	2	2
Credit Concentration Risk [Member] \| Accounts Receivable [Member] \| Customer One [Member]
Significant Accounting Policies [Line Items]
Concentration risk percentage	25.00%	44.00%
Credit Concentration Risk [Member] \| Accounts Receivable [Member] \| Customer Two [Member]
Significant Accounting Policies [Line Items]
Concentration risk percentage	15.00%	15.00%
Customer Concentration Risk [Member] \| Total Revenue [Member]
Significant Accounting Policies [Line Items]
Number of customers accounted \| Customer	1		2
Concentration risk percentage	17.00%
Customer Concentration Risk [Member] \| Total Revenue [Member] \| Customer One [Member]
Significant Accounting Policies [Line Items]
Concentration risk percentage			19.00%
Customer Concentration Risk [Member] \| Total Revenue [Member] \| Customer Two [Member]
Significant Accounting Policies [Line Items]
Concentration risk percentage			10.00%

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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