Balance Sheet Components

12 Months Ended

Dec. 31, 2015

Balance Sheet Components

Balance Sheet Components

5. Balance Sheet Components

Cash and Cash Equivalents

        Cash and cash equivalents consist of the following:

	December 31,
	2015		2014
	(in thousands)
Cash	$	14,085	$	8,598
Cash equivalents
Money market funds		93,108		104,021
Certificates of deposit		25		25
Total cash equivalents		93,133		104,046
Total		107,218	$	112,644

Property and Equipment, Net

        Property and equipment, net consists of the following:

	December 31,
	2015			2014
	(in thousands)
Computer equipment	$	28,159		$	18,384
Software		3,498			2,417
Office furniture		2,952			2,071
Leasehold improvements		7,120			5,123
Construction in progress		2,808			1,745
Total property and equipment		44,537			29,740
Less accumulated depreciation		(23,214	)		(12,908	)
Property and equipment, net	$	21,323		$	16,832

        Construction in progress includes costs primarily related to network equipment infrastructure to support the Company's data center.

        Depreciation expense was $10.4 million, $7.2 million and $3.9 million for 2015, 2014 and 2013, respectively.

Accrued Expenses and Other Current Liabilities

        Accrued expenses and other current liabilities are as follows:

	December 31,
	2015		2014
	(in thousands)
Accrued bonuses, commissions and wages	$	12,343	$	10,553
Accrued ESPP		2,387		2,324
Accrued vacation		3,739		2,972
Accrued marketing expenses		1,289		1,313
Accrued other		5,948		3,529
Total	$	25,706	$	20,691