Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS PROVIDED BY (USED IN) OPERATING ACTIVITIES:
Net loss including noncontrolling interest	$ (6,587)	$ (12,941)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	1,076	1,845
Increase in allowance for doubtful accounts	17	49
Lease termination charges	3,337	0
Goodwill impairment charges	0	3,388
Loss on disposal of and write down of property, equipment and other	0	692
Reduction of (increase in) accrued investment income	(16)	7
Stock-based compensation	(47)	1,306
Adjustment to contingent consideration	(96)	0
Change in operating assets and liabilities:
Accounts receivable	110	2,213
Inventories	317	824
Deferred cost of goods sold	145	72
Other current assets	(285)	167
Accounts payable	(1,441)	(1,032)
Accrued liabilities	(279)	(1,659)
Deferred revenues	(322)	402
Deferred rent	(148)	(21)
Net cash used in operating activities	(4,219)	(4,688)
CASH FLOWS PROVIDED BY (USED IN) INVESTING ACTIVITIES:
Purchases of available‑for‑sale short‑term investments	(3,991)	(8,993)
Proceeds from maturities and sales of available‑for‑sale short‑term investments	12,852	25,972
Change in other long‑term assets	0	(45)
Capital expenditures	(16)	(400)
Net cash provided by investing activities	8,845	16,534
CASH FLOWS PROVIDED BY (USED IN) FINANCING ACTIVITIES:
Principal payments of lease financing obligations	(10,888)	(1,104)
Restricted cash used as collateral for line of credit	0	(6,250)
Proceeds from exercise of stock options	0	17
Repurchase of common stock from employees for payment of taxes on vesting of restricted stock units and upon exercise of stock options	(129)	(262)
Net cash used in financing activities	(11,017)	(7,599)
EFFECT OF EXCHANGE RATE CHANGES ON CASH	(448)	(15)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(6,839)	4,232
CASH AND CASH EQUIVALENTS:
Beginning of period	13,340	14,648
End of period	6,501	18,880
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid for interest on lease financing obligations	382	562
Cash paid for income taxes	$ 119	$ 164