Note 3 - Balance Sheet Components

9 Months Ended

Sep. 30, 2018

Notes to Financial Statements

Supplemental Balance Sheet Disclosures [Text Block]

3.

Balance Sheet Components

The following table shows the components of property and equipment as of the dates presented:

		September 30,			December 31,
	Estimated Useful Life	2018			2017
Computer equipment	3 to 4 years	$	29,190		$	29,938
Software, including internally developed software	3 years		25,083			23,389
Leasehold improvements	Shorter of useful life or lease term		4,778			4,617
Office equipment, furniture and fixtures	3 to 5 years		2,136			2,127
Total property and equipment			61,187			60,071
Less: Accumulated depreciation and amortization			(48,445	)		(44,512	)
Property and equipment, net		$	12,742		$	15,559

Depreciation and amortization of internally developed software for the

nine

months ended

September 30, 2018

and

2017

was

$5,056

and

$6,419,

respectively.

The following table shows the components of accrued expenses and other current liabilities as of the dates presented:

	September 30,		December 31,
	2018		2017
Accrued salary and payroll-related expenses	$	3,952	$	4,372
Accrued liabilities		1,477		2,161
Advanced billings		469		459
Deferred rent		518		475
Customer advances		447		2,003
Income taxes payable		840		142
Sales and use tax payable		203		341
Other		956		521
Total accrued expenses and other current liabilities	$	8,862	$	10,474