Summary of Significant Accounting Policies - (Tables)

12 Months Ended

Dec. 31, 2019

Summary of Significant Accounting Policies

Components of Inventory

	December 31,
	2019		2018
Raw materials	$	217	$	112
Work-in-process		148		33
Finished goods		589		72
	$	954	$	217

Reconciliation of cash, cash equivalents, and restricted cash reported within the balance sheet to the total amounts shown in the statement of cash flows

	December  31,		December 31,		December 31,
	2019		2018		2017
Cash and cash equivalents	$	54,437	$	54,062	$	41,538
Restricted cash		1,764		6,614		1,614
Total cash, cash equivalents and restricted cash as shown on the statements of cash flows	$	56,201	$	60,676	$	43,152