2. Significant Balance Sheet Components

Property and Equipment—Property and equipment at December 31, 2015 and 2014 consisted of the following (in thousands):


	As of December 31,
	2015		2014
Computers and appliances	$	7,908	$	6,405
Purchased software		2,220		1,698
Furniture and fixtures		1,338		182
Leasehold improvements		2,887		717
Total property and equipment		14,353		9,002
Accumulated depreciation and amortization		(7,781)		(5,024)
Total property and equipment—net	$	6,572	$	3,978

Accrued Expenses—Accrued expenses at December 31, 2015 and 2014 consisted of the following (in thousands):


	As of December 31,
	2015		2014
Accrued commissions	$	4,181	$	6,199
Accrued stock-settled bonus		4,714		—
Accrued vacation		512		3,589
Employee Stock Purchase Plan liability		2,329		4,280
Other accrued payroll-related expenses		2,483		2,231
Liability for early exercised stock options (Note 11)		48		294
Other accrued liabilities		4,929		4,576
Total accrued expenses	$	19,196	$	21,169

Deferred Revenue—Current and noncurrent deferred revenue at December 31, 2015 and 2014 consisted of the following (in thousands):


	As of December 31,
	2015		2014
Perpetual license	$	400	$	3,045
Subscription		25,013		19,981
Software support		42,254		29,213
Professional services		2,208		1,935
Total current and noncurrent deferred revenue	$	69,875	$	54,174

Included in deferred perpetual license revenue is $300,000 and $2.1 million at December 31, 2015 and 2014, respectively, of revenue deferred for multiple element software license arrangements billed prior to January 1, 2013 for which we did not recognize revenue immediately due to lack of VSOE of fair value for software support and services. See Note 1 entitled “Description of Business and Significant Accounting Policies” in Item 8, “Financial Statements and Supplementary Data,” of Part II of this Annual Report on Form 10-K.