XML 58 R30.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Schedule II - Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2019
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule II - Valuation and Qualifying Accounts Financial Statement Schedules

Schedule II-Valuation and Qualifying Accounts (in thousands):
 
Years Ended December 31, 2019, 2018, and 2017
 
Balance at
Beginning of
Year 
 
 (Release) Provision for Bad Debts
 
Net Write-offs
 
Balance at
End of Year 
Allowance for doubtful accounts
 
 
 
 
 
 
 
2019
$
229

 
$
(79
)
 
$
(94
)
 
$
56

2018
259

 
142

 
(172
)
 
229

2017
436

 
47

 
(224
)
 
259


 
Years Ended December 31, 2019, 2018, and 2017
 
Balance at
Beginning of
Year 
 
Provision for Refunds
 
Refunds Issued
 
Balance at
End of Year 
Refund Reserve
 
 
 
 
 
 
 
2019
$
396

 
$
24,987

 
$
(24,829
)
 
$
554

2018
282

 
21,240

 
(21,126
)
 
396

2017
487

 
22,446

 
(22,651
)
 
282


All other financial statement schedules are omitted because they are not applicable or the information is included in the Registrant’s consolidated financial statements or related notes.