6. Debt

In February 2013, the Company entered into a capital lease arrangement with an equipment manufacturer to finance the acquisition of computer equipment. The lease has an effective annual interest rate of 6.0% and is repayable in 36 consecutive equal monthly installments of principal and interest. In August 2015, the Company entered into a separate capital lease arrangement with the same equipment manufacturer to finance the acquisition of additional computer equipment. This lease has an effective annual interest rate of 5.8% and is repayable in 48 consecutive equal monthly installments of principal and interest. At the end of the lease periods of both leases, the Company has the option to purchase the underlying equipment at the estimated fair market value or for a nominal amount. As of September 30, 2015 and December 31, 2014, the net book value of the equipment under the capital leases was $2,448 and $1,439, respectively, and the remaining principal balance payable was $2,656 and $1,542, respectively.

In December 2014, the Company entered into a standby letter of credit for $1,293 with Silicon Valley Bank in connection with the non-cancelable lease for the Company’s corporate headquarters in San Francisco. This standby letter of credit does not impact the balances available for withdrawal under the revolving credit facility or other facilities available to the Company. As of September 30, 2015 and December 31, 2014, no amount was drawn on this standby letter of credit.

In connection with the acquisition of SocialMoov on February 12, 2015 (see Note 2), the Company assumed outstanding debt totaling approximately $1,043, which consisted primarily of individual loans payable to (a) an agency of the French government, (b) a French public-sector investment bank and (c) a French private-sector financial institution. As of September 30, 2015, these loans were fully repaid.

In July 2015, the Company entered into an amendment to its existing loan and security agreement pursuant to which Silicon Valley Bank agreed to increase the revolving credit facility of up to the lesser of $20,000 or 80% of the Company’s eligible accounts receivable. Also, the expiration date of the revolving credit facility was extended to July 31, 2017, and the annual interest rate was amended to (a) the prime rate or (b) the London interbank offered rate then in effect, plus a margin of 2.75%, payable on a monthly basis. The amendment contains affirmative and negative covenants, including covenants related to the delivery of financial and other information, the maintenance of certain financial covenants, as well as limitations on dispositions, changes in business or management, mergers or consolidations, dividends and other corporate actions. No amounts were outstanding pursuant to the revolving credit facility as of September 30, 2015 and December 31, 2014.

The maturities of all outstanding debt, including the capital lease arrangements, as of September 30, 2015, are as follows:

Year ending
2015	$	842
2016		1,099
2017		472
2018		500
2019		307
		3,220
Less:
Current portion		(1,826	)
Discount on long-term debt		(48	)
Noncurrent portion of debt	$	1,346