Patent Licenses (Tables)

3 Months Ended

Mar. 31, 2017

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Future Amortization Expense Related to Intangible Assets Subject to Amortization

At March 31, 2017, future amortization expense related to intangible assets subject to amortization is expected to be as follows (in thousands):

	Amount
2017 (remaining nine months)	$	100
2018		133
2019		100
2020		83
2021		83
Thereafter		2,956
Total	$	3,455