The following financial statement schedule is filed as part of this Annual Report on Form 10-K:
Schedule II—Valuation and Qualifying Accounts and Reserves For the Year Ended December 31, 2018, 2017 and 2016
All other schedules have been omitted as they are not required, not applicable, or the required information is otherwise included.
SCHEDULE II: VALUATION AND QUALIFYING ACCOUNTS AND RESERVES
Balance at Beginning of Period
Additions (Reductions) to Costs and Expenses
Write Offs
Balance at End of Period
(in thousands)
Allowance for doubtful accounts(1):
Year Ended December 31, 2016
$
1,108
$
8,585
$
(6,747
)
$
2,946
Year Ended December 31, 2017
$
2,946
$
9,948
$
(7,080
)
$
5,814
Year Ended December 31, 2018
$
5,814
$
12,321
$
(15,757
)
$
2,378
Valuation allowance for deferred tax assets:
Year Ended December 31, 2016
$
31,685
$
(31,429
)
$
—
$
256
Year Ended December 31, 2017
$
256
$
22
$
—
$
278
Year Ended December 31, 2018
$
278
$
(27
)
$
—
$
251
(1)
Balances have been recast to reflect the adoption of new revenue accounting standard (Refer to Note 1 "Summary of Significant Accounting Policies" of the Notes to Consolidated Financial Statements for details).
(b)
The following Exhibits are included in this Annual Report on Form 10-K: