Convertible Notes and Credit Facilities (Tables)

12 Months Ended

Dec. 31, 2017

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments

The following table presents the components of the Notes as of December 31, 2017 and December 31, 2016 (in thousands, except for years and percentages):



	December 31,
	2017			2016
Liability:
Principal amount	$	128,250		128,250
Less: Debt discount, net of amortization	(17,404		)	(22,302		)
Less: Debt issuance costs, net of amortization	(2,098		)	(2,689		)
Carrying amount	$	108,748		103,259
Remaining amortization period (years)	2.9 years			3.9 years
Effective interest rate on liability component	9.94		%	9.94		%
Carrying amount of equity component	$	26,062		$	26,062

Convertible Interest Expense Recognized

The following table presents interest expense recognized related to the Notes (in thousands):



	Year ended December 31,
	2017		2016	2015
Contractual interest expense	$	5,130	5,130	240
Amortization of debt discount	4,898		4,430	193
Amortization of debt issuance costs	591		534	23
Total interest expense recognized	$	10,619	10,094	456

Schedule of Debt

In connection with the TVN acquisition, the Company assumed a variety of debt and credit facilities in France to satisfy the financing requirements of TVN operations. These arrangements are summarized in the table below (in thousands):



	December 31,
	2017		2016
Financing from French government agencies related to various government incentive programs ⁽¹⁾	20,565		17,930
Term loans	1,282		1,400
Obligations under capital leases	1,099		1,860
Total debt obligations	22,946		21,190
Less: current portion	(7,610	)	(7,275	)
Long-term portion	15,336		13,915

(1) Loans backed by French R&D tax credit receivables were $17.7 million and $14.7 million as of December 31, 2017 and 2016, respectively. As of December 31, 2017, the TVN French Subsidiary had an aggregate of $28.5 million of R&D tax credit receivables from the French government from 2018 through 2021. (See Note 9, “Certain Balance Sheet Components-Prepaid expenses and other current assets,” for more information). These tax loans have a fixed rate of 0.6%, plus EURIBOR 1 month plus 1.3% and mature between 2018 through 2020. The remaining loans of $2.9 million and $3.2 million as of December 31, 2017 and 2016, respectively, primarily relate to financial support from French government agencies for R&D innovation projects at minimal interest rates and the loans outstanding at December 31, 2017 mature between 2020 through 2025.

Schedule of Maturities of Long-term Debt

The table below shows the future minimum repayments of debts and capital lease obligations as of December 31, 2017 (in thousands):



Years ending December 31,	Capital lease obligations		Other Debt obligations
2018	930		6,674
2019	95		7,141
2020	51		6,942
2021	23		515
2022	—		474
Thereafter	—		101
Total	$	1,099	$	21,847