SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Schedule of reconciliation of the allowance for doubtful accounts

A reconciliation of the beginning and ending balances of the allowance for doubtful accounts is as follows (in thousands):

	Year Ended December 31,
	2020		2019		2018
Balance, beginning of the period	$	1,466	$	1,143	$	675
Charges to earnings	1,785		1,697		880
Write-off of uncollectible accounts receivable	(1,859)		(1,400)		(435)
Recoveries collected	10		26		23
Balance, end of the period	$	1,402	$	1,466	$	1,143

Schedule of depreciation period for each asset category

The following table presents the estimated useful lives for each asset category:

Asset Category	Estimated Useful Lives
Computer equipment and capitalized software	1 to 5 years
Leasehold improvements	Lesser of asset life or life of lease
Furniture and other equipment	7 years
Aircraft and automobile	5 to 10 years

Schedule of effect of new accounting pronouncements

The cumulative effect of the changes made to the consolidated January 1, 2018 balance sheet for the adoption of ASC Topic 606 were as follows (in thousands):

	December 31, 2017		Adjustments due to ASC Topic 606		January 1, 2018
Assets:
Prepaid and other current assets	$	11,881	$	1,903	$	13,784
Deferred income tax assets	20,156		(530)		19,626
Shareholders' equity:
Accumulated deficit	$	(708,354)	$	1,373	$	(706,981)