Note 5 - Balance Sheet Components

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Supplemental Balance Sheet Disclosures [Text Block]

5.

Balance Sheet Components

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

		December 31,
	Estimated Useful Life	2018			2017
Computer equipment	3 to 4 years	$	27,781		$	29,938
Software, including internally developed software	3 years		25,518			23,389
Leasehold improvements	Shorter of useful life or lease term		4,778			4,617
Office equipment, furniture and fixtures	3 to 5 years		2,140			2,127
Total property and equipment			60,217			60,071
Less: Accumulated depreciation and amortization			(48,402	)		(44,512	)
Property and equipment, net		$	11,815		$	15,559

Depreciation and amortization of internally developed software for

2018,

2017

and

2016

was

$6,432,

$8,427,

and

$9,023,

respectively.

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

	December 31,
	2018		2017
Accrued salary and payroll-related expenses	$	3,695	$	4,372
Deferred strategic agreement revenues (Note 3)		934		—
Income taxes payable		883		142
Accrued liabilities		866		2,161
Advanced billings		859		459
Deferred rent		538		475
Customer advances (Note 3)		432		2,003
Sales and use tax payable		244		341
Other		932		521
Total accrued expenses and other current liabilities	$	9,383	$	10,474