Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net (loss) income	$ (3,916)	$ 2,111	$ (5,905)	$ 3,240
Loss from discontinued operations	0	(81)	(12)	(176)
(Loss) income from continuing operations	(3,916)	2,192	(5,893)	3,416
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation	185	52	336	101
Stock-based compensation			640	284
Provision for doubtful accounts receivable			(29)	56
Provision for slow-moving and obsolete inventory			(91)	1,244
Amortization of loan origination fees			0	23
Loss on dispositions of property and equipment			1	0
Changes in operating assets and liabilities:
Accounts Receivable			4,952	272
Inventories			(6,771)	(3,788)
Prepaid and other assets			(955)	(157)
Accounts payable			176	(2,583)
Accrued and other liabilities			(549)	1,766
Deferred revenue			(26)	67
Total adjustments			(2,316)	(2,715)
Net cash (used in) provided by operating activities			(8,209)	701
Cash flows from investing activities:
Acquisitions of property and equipment			(1,047)	(360)
Net cash used in investing activities			(1,047)	(360)
Cash flows from financing activities:
Proceeds from warrants exercised			0	2,503
Proceeds from exercises of stock options and employee stock purchase plan purchases			386	83
Repurchases of common stock			(309)	0
Net proceeds on credit line borrowings			0	2
Net cash provided by financing activities			77	2,588
Effect of exchange rate changes on cash			(8)	0
Net cash (used in) provided by continuing operations			(9,187)	2,929
Cash flows of discontinued operations:
Operating cash flows, net			(12)	(390)
Net cash used in discontinued operations			(12)	(390)
Net (decrease) increase in cash and cash equivalents			(9,199)	2,539
Cash and cash equivalents, beginning of period			34,640	7,435
Cash and cash equivalents, end of period	25,441	9,974	25,441	9,974
Classification of cash and cash equivalents:
Cash and cash equivalents	25,099	9,538	25,099	9,538
Restricted cash held	342	136	342	136
Cash and cash equivalents, end of period	$ 25,441	$ 9,974	$ 34,640	$ 7,435