Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2020

Accounting Policies [Abstract]

Allowance for Doubtful Accounts Rollforward

The changes in the allowance for doubtful accounts during the six months ended June 30, 2020 were as follows:

(in thousands)	Six Months Ended June 30, 2020
Beginning balance – January 1	$	8,700
Additions: Charges to costs and expenses	5,672
Deductions: Returns and write-offs	(972)
Ending balance – June 30	$	13,400

Cash and Cash Equivalents

Our cash and cash equivalents balances comprise the following:

	June 30, 2020			December 31, 2019
(in thousands, except percentages)	Amount		% of Total	Amount		% of Total
Cash accounts	$	518,734	69.7	$	549,639	63.0
Money market funds	225,812		30.3	322,455		37.0
Total	$	744,546		$	872,094