CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 7,202	$ 15,868
Securities available-for-sale	2,518	3,227
Accounts receivable, net	13,829	7,274
Inventories, net	4,808	4,381
Restricted cash	233	233
Other current assets	3,647	764
Total current assets	32,237	31,747
Property and equipment, net	31,967	6,252
Intangible assets, net	13,361	3,079
Goodwill	7,205	2,897
Deferred tax assets	26,818	18,578
Restricted cash	3,636	0
Other assets	1,211	1,560
Total assets	116,435	64,113
Liabilities and stockholders’ equity
Accounts payable	5,120	1,369
Accrued compensation	4,426	2,453
Accrued warranty	218	213
Deferred revenue	3,844	1,673
Current portion of long-term debt	5,085	0
Other current liabilities	4,471	2,998
Total current liabilities	23,164	8,706
Long-term debt, net of current portion	26,127	0
Other liabilities	2,129	1,252
Total liabilities	$ 51,420	$ 9,958
Commitments and contingencies (Note 9)
Stockholders’ equity:
Preferred stock, $0.0001 par value: 10,000,000 shares authorized; no shares issued or outstanding	$ 0	$ 0
Common stock, $0.0001 par value: 80,000,000 shares authorized; 19,508,201 and 19,416,070 shares issued and outstanding (net of treasury shares) at March 31, 2016 and December 31, 2015, respectively	2	2
Treasury stock, at cost; 2,588,484 shares at March 31, 2016 and December 31, 2015	(5,728)	(5,728)
Additional paid-in capital	153,111	153,860
Accumulated other comprehensive loss	(240)	(240)
Accumulated deficit	(82,130)	(93,739)
Total stockholders’ equity	65,015	54,155
Total liabilities and stockholders’ equity	$ 116,435	$ 64,113

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).

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.