Debt and Credit Facilities Debt and Credit Facilities (Tables)

9 Months Ended

Sep. 30, 2017

Debt Instrument [Line Items]

Schedule of carrying value of the Notes

The carrying value of the Notes is as follows (in thousands):

	As of September 30, 2017
Principal amount	$	40,000
Unamortized debt discount - equity component	(7,350		)
Unamortized debt discount - initial purchaser	(2,195		)
Unamortized transaction costs	(375		)
Net carrying value	$	30,080

Schedule of convertible debt interest expense

Total interest expense related to the Notes is as follows (in thousands):

	Three and Nine Months Ended September 30, 2017
Cash interest expense
Coupon interest expense	$	37
Non-cash interest expense
Amortization of debt discount - equity component	18
Amortization of debt discount - initial purchaser	5
Amortization of transaction costs	1
Total interest expense	$	61