XML 68 R81.htm IDEA: XBRL DOCUMENT v3.20.1
Schedule II (Details) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
SEC Schedule, 12-09, Allowance, Credit Loss [Member]      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Year $ 25,000 $ 0 $ 0
(Recovered)/Charged to Costs and Expenses 4,000 25,000 0
Charged to Other Accounts 36,000 0 0
Deductions [1] 15,000 0 0
Balance at End of Year 50,000 25,000 0
Allowance for Chargebacks [Member]      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Year 2,344,000 857,000 309,000
(Recovered)/Charged to Costs and Expenses 1,316,000 2,639,000 981,000
Charged to Other Accounts 0 0 0
Deductions [1] 3,184,000 1,152,000 433,000
Balance at End of Year $ 476,000 $ 2,344,000 $ 857,000
[1] (A) Amount represents uncollectible accounts written off.