Financial Statement Components (Tables)

12 Months Ended

Dec. 31, 2019

Financial Statement Components [Abstract]

Schedule of cash and cash equivalents

Cash and cash equivalents consisted of the following (in thousands):

	December 31,
	2019		2018
Cash and cash equivalents:
Cash	$	73,100	$	69,893
Money market funds	2,179		10,833
U.S. Treasury	—		638
U.S. agency securities	—		50
Commercial paper	2,697		498
Total cash and cash equivalents	$	77,976	$	81,912

Schedule of accounts receivable

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

	December 31,
	2019		2018
Trade accounts receivable	$	34,591	$	23,068
Unbilled trade accounts receivable, net of advance client deposits	3,075		1,741
Allowance for doubtful accounts	(11)		(12)
Accounts receivable, net	$	37,655	$	24,797

Schedule of prepaid expenses and other current assets

Prepaid expenses and other current assets consisted of the following (in thousands):

	December 31,
	2019		2018
Prepaid expenses	$	4,901	$	5,005
Other current assets	4,930		2,679
Contract assets	825		330
Prepaid expenses and other current assets	$	10,656	$	8,014

Schedule of useful lives of property and equipment

Property and equipment is stated at cost less accumulated depreciation and amortization, and is depreciated using the straight-line method over the estimated useful lives of the assets as follows:

Asset Category	Estimated Useful Lives
Computer and network equipment	3 to 5 years
Computer software	3 years
Development costs	1 to 5 years
Furniture and fixtures	7 years
Leasehold improvements	Shorter of useful life or lease term

Property and equipment, net consisted of the following (in thousands):

	December 31,
	2019		2018
Computer and network equipment	$	67,378	$	54,452
Computer software	14,157		10,064
Internal-use software development costs	500		500
Furniture and fixtures	2,918		1,491
Leasehold improvements	2,264		855
Property and equipment	87,217		67,362
Accumulated depreciation and amortization	(54,027)		(41,477)
Property and equipment, net	$	33,190	$	25,885

Schedule of lease obligations

Property and equipment capitalized under finance lease obligations consists primarily of computer and network equipment and was as follows (in thousands):

	December 31,
	2019		2018
Gross	$	46,671	$	47,383
Less: accumulated depreciation and amortization	(39,190)		(33,547)
Total	$	7,481	$	13,836

The components of lease expenses were as follows (in thousands):

	Year Ended December 31,
	2019		2018		2017
Operating lease cost	$	5,153	$	—	$	—
Finance lease cost:
Amortization of right-of-use assets	$	6,345	$	7,125	$	8,470
Interest on finance lease liabilities	704		1,347		1,737
Total finance lease cost	$	7,049	$	8,472	$	10,207

Supplemental cash flow information related to leases was as follows (in thousands):

	Year Ended December 31,
	2019		2018		2017
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash used in operating leases	$	(5,237)	$	—	$	—
Financing cash used in finance leases	(7,054)		(8,544)		(7,068)
Right of use assets obtained in exchange for lease obligations:
Operating leases	5,737		—		—
Finance leases	—		6,133		9,261

Weighted average remaining terms were as follows (in years):

	December 31,
	2019	2018
Weighted average remaining lease term
Operating leases	2.7 years	2.0 years
Finance leases	1.1 years	1.8 years

Weighted average discount rates were as follows:

	December 31,
	2019		2018
Weighted average discount rate
Operating leases	4.7	%	—	%
Finance leases	7.5	%	9.0	%

Schedule of accrued and other current liabilities

Accrued and other current liabilities consisted of the following (in thousands):

	December 31,
	2019		2018
Accrued expenses	$	4,152	$	3,494
Accrued compensation and benefits	14,233		10,277
Accrued and other current liabilities	$	18,385	$	13,771