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Consolidated Statements of Cash Flows (Parentheticals) (USD $)
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12 Months Ended | |
|---|---|---|
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Mar. 28, 2015
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Mar. 29, 2014
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|
| Issuance costs | $ 0us-gaap_PaymentsOfStockIssuanceCosts | $ 41,000us-gaap_PaymentsOfStockIssuanceCosts |
| Preferred stock, issuance costs | 0us-gaap_PaymentsOfStockIssuanceCosts | 41,000us-gaap_PaymentsOfStockIssuanceCosts |
| Series C and D Warrants [Member] | ||
| Issuance costs |
42,000us-gaap_PaymentsOfStockIssuanceCosts / us-gaap_ClassOfWarrantOrRightAxis = giga_SeriesCAndDWarrantsMember |
|
| Preferred stock, issuance costs |
$ 42,000us-gaap_PaymentsOfStockIssuanceCosts / us-gaap_ClassOfWarrantOrRightAxis = giga_SeriesCAndDWarrantsMember |
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| X | ||||||||||
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- Definition
The cash outflow for cost incurred directly with the issuance of an equity security. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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