Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2021

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Valuation and Qualifying Accounts

Schedule II – Valuation and Qualifying Accounts for the years ended December 31, 2021, 2020 and 2019

Dollars in thousands				ADDITIONS AND DEDUCTIONS
DESCRIPTION		BALANCE AT BEGINNING OF PERIOD		CHARGED/(CREDITED) TO COSTS AND EXPENSES		CHARGED TO OTHER ACCOUNTS		UNCOLLECTIBLE ACCOUNTS WRITTEN-OFF		BALANCE AT END OF PERIOD
2021	Accounts receivable allowance	$	604	$	72	$	—	$	22	$	654
2020	Accounts receivable allowance	$	418	$	207	$	—	$	21	$	604
2019	Accounts receivable allowance	$	251	$	167	$	—	$	—	$	418