Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments And Contingencies Disclosure [Abstract]

Summary of Principal Contractual Obligations Excluding the Financial Liabilities and Long-Term Payment Obligation

The following table summarizes the Company’s principal contractual commitments, excluding the financial liabilities and long-term payment obligation, as of December 31, 2017 (in thousands):

	Operating Leases		Purchase Commitments		Other Contractual Commitments		Total
2018	$	1,275	$	11,342	$	25	$	12,642
2019		1,122		—		12		1,134
2020		906		—		12		918
2021		653		—		12		665
2022		415		—		12		427
Thereafter		35		—		—		35
Total	$	4,406	$	11,342	$	73	$	15,821