Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 32,246	$ 19,622
Accounts receivable, net	5,676	3,118
Inventories	1,954	2,803
Prepaid expenses and other current assets	1,341	736
Total current assets	41,217	26,279
Property and equipment, net	4,636	3,793
Other assets, net	781	785
Total assets	46,634	30,857
Current liabilities:
Accounts payable	2,516	1,734
Accrued liabilities and current portion of long-term liabilities	13,241	7,860
Current portion of income taxes payable	989	140
Total current liabilities	16,746	9,734
Long-term liabilities, net of current portion	1,029	194
Income taxes payable, net of current portion	2,046	1,880
Total liabilities	19,821	11,808
Commitments and contingencies (Note 10)
Shareholders’ equity:
Preferred stock	0	0
Common stock	398,019	394,296
Accumulated other comprehensive income	10	10
Accumulated deficit	(371,216)	(375,257)
Total shareholders’ equity	26,813	19,049
Total liabilities and shareholders’ equity	$ 46,634	$ 30,857

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due after one year (or beyond the operating cycle if longer), including liabilities for compensation costs, fringe benefits other than pension and postretirement obligations, rent, contractual rights and obligations, and statutory obligations.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).