Contract Balances (Tables)

9 Months Ended

Sep. 30, 2020

Contract With Customer Asset And Liability [Abstract]

Schedule of Accounts Receivable

Accounts receivable (in thousands) consisted of the following, as of:

	September 30,			December 31,
	2020			2019
Billed and billable	$	151,234		$	165,153
Less: allowance for credit losses		(2,722	)		(1,637	)
Accounts receivable, net	$	148,512		$	163,516

Deferred Revenue and Advance Payments

Deferred revenue and advance payments (in thousands) from customers consisted of the following, as of:

	September 30,		December 31,
	2020		2019
Current:
Deferred product licenses revenue	$	186	$	481
Deferred subscription services revenue		19,535		16,561
Deferred product support revenue		134,632		161,670
Deferred other services revenue		6,492		8,395
Total current deferred revenue and advance payments	$	160,845	$	187,107
Non-current:
Deferred product licenses revenue	$	140	$	293
Deferred subscription services revenue		5,988		97
Deferred product support revenue		4,759		3,417
Deferred other services revenue		770		537
Total non-current deferred revenue and advance payments	$	11,657	$	4,344