Giga-tronics Incorporated Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Fair Value (Details Textual) $ in Thousands	Mar. 26, 2018 yr shares	Dec. 28, 2019 USD ($)	Mar. 30, 2019 USD ($)
Fair Value, Recurring [Member]
Assets, Fair Value Disclosure		$ 0	$ 0
Fair Value, Nonrecurring [Member]
Assets, Fair Value Disclosure		0	0
Financial and Nonfinancial Liabilities, Fair Value Disclosure		$ 0	$ 0
PFG Warrants [Member]
Stock Issued During Period, Shares, Revaluation of Warrants \| shares	150,000
PFG Warrants [Member] \| Fair Value, Recurring [Member] \| Measurement Input, Expected Term [Member]
Derivative Liability, Measurement Input \| yr	0.96
PFG Warrants [Member] \| Fair Value, Recurring [Member] \| Measurement Input, Price Volatility [Member]
Derivative Liability, Measurement Input	0.85
PFG Warrants [Member] \| Fair Value, Recurring [Member] \| Measurement Input, Risk Free Interest Rate [Member]
Derivative Liability, Measurement Input	0.0212
PFG Warrants [Member] \| Fair Value, Recurring [Member] \| Measurement Input, Expected Dividend Rate [Member]
Derivative Liability, Measurement Input	0