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Goodwill (Tables)
 12 Months Ended
Sep. 30, 2020
Goodwill And Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill

 

The changes in the carrying amount of goodwill for the year ended September 30, 2020 are as follows (in thousands):

 

 

 

Semiconductor

 

 

SiC/LED

 

 

Non-Segment Related

 

 

Net

Goodwill -

Continuing

Operations

 

 

Discontinued

Operations

 

 

Net

Goodwill

 

Goodwill

 

$

5,905

 

 

$

728

 

 

$

3,595

 

 

$

10,228

 

 

$

3,367

 

 

$

13,595

 

Accumulated impairment losses

 

 

—

 

 

 

—

 

 

 

(3,595

)

 

 

(3,595

)

 

 

(3,367

)

 

 

(6,962

)

Balance at September 30, 2019

 

 

5,905

 

 

 

728

 

 

 

—

 

 

 

6,633

 

 

 

—

 

 

 

6,633

 

Impairment of goodwill

 

 

—

 

 

 

—

 

 

 

—

 

 

 

—

 

 

 

—

 

 

 

—

 

Balance at September 30, 2020

 

$

5,905

 

 

$

728

 

 

$

—

 

 

$

6,633

 

 

$

—

 

 

$

6,633

 

Goodwill

 

$

5,905

 

 

$

728

 

 

$

—

 

 

$

6,633

 

 

$

—

 

 

$

6,633

 

Accumulated impairment losses

 

 

—

 

 

 

—

 

 

 

—

 

 

 

—

 

 

 

—

 

 

 

—

 

Balance at September 30, 2020

 

$

5,905

 

 

$

728

 

 

$

—

 

 

$

6,633

 

 

$

—

 

 

$

6,633