Revenue from Contracts with Customers (Tables)

12 Months Ended

Dec. 31, 2018

Revenue from Contract with Customer [Abstract]

Commission asset balances

Capitalized costs to obtain contracts, current and noncurrent are as follows (in thousands):

	December 31, 2018		January 1, 2018
Commission asset, current	$	1,480	$	704
Commission asset, noncurrent	$	4,692	$	2,819

Contract liabilities

Contract liabilities (deferred revenue) balances are as follows (in thousands):

	December 31, 2018
	ASC 606		Operating Leases		Total
Deferred revenue, current	$	152,204	$	12,420	$	164,624
Deferred revenue, noncurrent	18,286		2,137		20,423
Total	$	170,490	$	14,557	$	185,047
	January 1, 2018
	ASC 606		Operating Leases		Total
Deferred revenue, current	$	130,579	$	12,607	$	143,186
Deferred revenue, noncurrent	15,419		1,717		17,136
Total	$	145,998	$	14,324	$	160,322

Accounts receivable, net

Accounts receivable, net, consists of the following (in thousands):

	December 31, 2018			January 1, 2018
ASC 606 receivables	$	71,387		$	60,984
Operating lease receivables	5,121			4,244
Less: allowance for doubtful accounts	(683		)	(816		)
Total accounts receivable, net	$	75,825		$	64,412

Expected revenue from contracts

The following table sets forth the expected revenue from all remaining performance obligations as of December 31, 2018 (in thousands):

	ASC 606 Expected Revenue		Operating Lease Expected Revenue		Total Expected Revenue
2019	$	46,682	$	5,067	$	51,749
2020	24,608		2,194		26,802
2021	10,730		1,071		11,801
2022	1,111		39		1,150
2023	348		9		357
2024 and thereafter	20		—		20
Total	$	83,499	$	8,380	$	91,879

Revenue by sales channel

Revenues by sales channel are as follows (in thousands):

	Year Ended December 31, 2018
	ASC 606 Revenue		Operating Lease Revenue		Total Revenue
Direct	$	148,310	$	15,774	$	164,084
Partner	106,816		7,989		114,805
Total	$	255,126	$	23,763	$	278,889