Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities
Net loss	$ (9,387)	$ (2,155)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	760	557
Share-based compensation expense	1,025	25
Loss on change in fair value of warrants	22
Loss on disposal of property and equipment		(1)
Changes in operating assets and liabilities:
Accounts receivable, net	(204)	(1,899)
Inventory	(1,111)	(392)
Prepaid expenses and other	(455)	(200)
Accounts payable	1,198	125
Accrued liabilities	(2,405)	(602)
Deferred income	822	303
Net cash used in operating activities	(9,735)	(4,239)
Cash flows from investing activities
Purchases of property and equipment	(1,469)	(534)
Purchases of intangible assets	(17)
Proceeds on sales of property and equipment		22
Decrease in restricted cash	57	153
Net cash used in investing activities	(1,429)	(359)
Cash flows from financing activities
Proceeds from issuance of preferred ordinary shares		2,942
Proceeds from exercise of share options and warrants	9	17
Proceeds from term loan		6,000
Payments on loan	(73)	(40)
Payments on revolving line of credit		(1,500)
Net cash (used in) provided by financing activities	(64)	7,419
Effect of exchange rate changes on cash and cash equivalents	509	(963)
Net (decrease) increase in cash and cash equivalents, excluding restricted cash	(10,719)	1,858
Cash and cash equivalents at beginning of period	76,494	12,578
Cash and cash equivalents at end of period	65,775	14,436
Noncash investing and financing activities:
Fair value of warrant issued with convertible notes		17
Warrants liability reclassified to additional paid-in capital upon exercise of warrants	$ 318