Debt (Tables)

12 Months Ended

Dec. 31, 2016

Debt Instrument [Line Items]

Schedule of Long-term Debt Instruments

The net carrying amount of the liability component of the Notes consists of the following:

	As of December 31,
	2016		2015
Total convertible senior notes - par	$	—	$	11,154
Unamortized discount	—		(352		)
	$	—	$	10,802

Interest Expense Associated with Convertible Notes

Total interest expense associated with the Notes, net of capitalized interest as applicable, consists of the following:

	Year Ended December 31,
	2016		2015		2014
Contractual coupon interest rate	$	7	$	544	$	5,036
Amortization of discount and note issuance costs	150		2,818		17,821
	$	157	$	3,362	$	22,857