XML 69 R32.htm IDEA: XBRL DOCUMENT v3.10.0.1
Schedule II - Consolidated Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2018
Valuation and Qualifying Accounts [Abstract]  
Schedule II - Consolidated Valuation and Qualifying Accounts SCHEDULE II - CONSOLIDATED VALUATION AND QUALIFYING ACCOUNTS

(in thousands)
 
Additions
 
 
Allowance for doubtful accounts receivable - Year ended December 31,

Balance at beginning of period
Charged to costs and expenses
Transferred from (to) allowance for accounts / notes receivable
(1)
Deductions
Balance at end of period
2018
$
9,156

$
542

$
—

$
(1,373
)
$
8,325

2017
7,706

3,000

—

(1,550
)
9,156

2016
6,938

1,191

—

(423
)
7,706

(1) Uncollectible accounts written off, net of recoveries and adjustments to estimates for the allowance accounts.