Accrued Liabilities and Deferred Revenue

3 Months Ended

Mar. 31, 2014

Accrued Liabilities and Deferred Revenue

NOTE 7—ACCRUED LIABILITIES AND DEFERRED REVENUE

Accrued liabilities are comprised of the following (in thousands):

	March 31, 2014		December 31, 2013
Payroll and benefits	$	1,594	$	1,898
Warranty accrual, current portion		1,025		1,096
Sales and excise tax		163		322
Accrued professional services		1,366		912
Accrued insurance premium		276		428
Other		517		341
Total accrued liabilities	$	4,941	$	4,997

Changes in the initial product warranty accrual, and the expenses incurred under the Company’s initial and extended warranties, for the three months ended March 31, 2014 and 2013 were as follows (in thousands):

	Three Months Ended March 31,
	2014			2013
Initial warranty accrual, beginning balance	$	1,096		$	1,699
Provision for estimated warranty cost		148			337
Warranty expenditures		(219	)		(281	)
		1,025			1,755
Total warranty accrual, long-term		—			—
Total warranty accrual, current portion	$	1,025		$	1,755

Deferred revenue is comprised of the following (in thousands):

	March 31, 2014		December 31, 2013
Undelivered elements (training, installation and product and support services)	$	1,645	$	1,823
Extended warranty contracts		1,630		1,642
Total deferred revenue		3,275		3,465
Less long-term amounts:
Extended warranty contracts		—		(1	)
Total deferred revenue, long-term		—		(1	)
Total deferred revenue, current portion	$	3,275	$	3,464