Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable

The following table summarizes the changes in the allowances for doubtful accounts and sales adjustments (in thousands):

	Years Ended December 31,
	2019			2018			2017
Balance at beginning of year	$	4,647		$	5,427		$	3,396
Provisions for losses and sales adjustments - accounts receivable	1,636			(569		)	2,031
Collection of accounts previously written off	(545		)	(211		)	—
Balance at end of year	$	5,738		$	4,647		$	5,427

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

Amounts recognized at January 1, 2019, for operating leases were as follow (in thousands):

Operating lease right-of-use assets	$	15,633
Operating lease liabilities	(4,344		)
Operating lease liabilities, long-term	(12,405		)
Retained earnings	$	(1,116	)