Annual report pursuant to Section 13 and 15(d)

Schedule II Valuation and Qualifying Accounts

v3.20.4
Schedule II Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule II Valuation and Qualifying Accounts
Schedule II Valuation and Qualifying Accounts 
(in thousands) Balance at Beginning of Period Charged to (Reduction of) Cost and Expenses Charged to Other Accounts Deductions Balance at End of Period
Year ended December 31, 2020
Deducted from asset account:
Allowance for credit losses $ 70  $ 440  $ 450 
(a)
 $ (464) $ 496 
Inventory reserves $ 747  $ 271  $ —  $ (300) $ 718 
Year ended December 31, 2019
Deducted from asset account:
Allowance for credit losses $ 169  $ (171) $ 72 
(b)
 $ —  $ 70 
   Inventory reserves $ 676  $ 1,767  $ —  $ (1,696) $ 747 
(a) Amount charged to retained earnings upon adoption of ASC 326 on January 1, 2020.
(b) ASTI acquired reserve on January 1, 2019.