Certain Balance Sheet Accounts

12 Months Ended

Dec. 31, 2017

Organization Consolidation And Presentation Of Financial Statements [Abstract]

(11) Certain Balance Sheet Accounts

Property and Equipment:

Property and equipment as of December 31, 2017 and 2016 is recorded at cost less accumulated depreciation and consists of the following (in thousands):

	2017		2016
Computers and equipment	$	18,570	$	17,137
Computer software		29,891		26,686
Furniture and fixtures		9,094		8,471
Leasehold improvements		26,650		25,204
Total property and equipment		84,205		77,498
Less accumulated depreciation		58,956		53,604
Total	$	25,249	$	23,894

Accrued Expenses and Other Current Liabilities:

Accrued expenses and other current liabilities as of December 31, 2017 and 2016 consist of the following (in thousands):

	2017		2016
Payroll and related benefits	$	34,809	$	28,681
Taxes		3,912		4,704
Other		10,908		8,018
Total	$	49,629	$	41,403

Allowance for Doubtful Accounts:

A roll-forward of the allowance for doubtful accounts as of and for the years ended December 31, 2017, 2016, and 2015 is as follows (in thousands):

	2017			2016			2015
Balance, beginning of year	$	140		$	153		$	188
Provision for doubtful accounts		331			150			106
Write-offs		(316	)		(163	)		(141	)
Balance, end of year	$	155		$	140		$	153