Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Mar. 31, 2020

Notes to Financial Statements

SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

Schedule II

Cyanotech Corporation

Valuation and Qualifying Accounts

Years Ended

March 

31,

20

20

,

201

9

and

201

8

(in thousands)

			Additions
Description	Balance at Beginning of Year		Charged to Costs and Expense		Charged to Other Accounts		Deductions		Balance at End of Year
Allowance for Doubtful Accounts:
2020	$	27	$	—	$	—	$	14	$	13
2019		27		—		—		—		27
2018		49		—		—		22		27