Additions

Balance at

Balance

Charged to

Balance at

Beginning

Acquired from

Costs and

Other

End of

Description

of Period

Acquisition

Expenses

Accounts

Deductions

Period

(In thousands)

Allowance for doubtful accounts for the year ended April 30:

2019

$

1,080

$

—

$

198

$

—

$

(237)

$

1,041

2020

$

1,041

$

—

$

219

$

—

$

(70)

$

1,190

2021

$

1,190

$

—

$

82

$

—

$

(677)

$

595

Warranty reserve for the year ended April 30:

2019

$

2,090

$

—

$

702

$

—

$

(1,088)

$

1,704

2020

$

1,704

$

—

$

2,069

$

—

$

(1,758)

$

2,015

2021

$

2,015

$

—

$

1,650

$

—

$

(1,324)

$

2,341

Reserve for inventory excess and obsolescence for the year ended April 30:

2019

$

3,953

$

—

$

5,054

$

—

$

(1,183)

$

7,824

2020

$

7,824

$

—

$

5,377

$

—

$

(2,969)

$

10,232

2021

$

10,232

$

1,415

$

1,178

$

—

$

(2,536)

$

10,289

Reserve for self-insured medical claims for the year ended April 30:

2019

$

1,003

$

—

$

10,808

$

—

$

(10,867)

$

944

2020

$

944

$

—

$

13,031

$

—

$

(13,222)

$

753

2021

$

753

$

—

$

11,329

$

—

$

(10,789)

$

1,293