Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities
Net loss	$ (15,482)	$ (5,336)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,239	863
Share-based compensation expense	1,759	77
Loss on change in fair value of warrants	22	119
Loss on disposal of property and equipment		(1)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable, net	(480)	(1,788)
Inventory	(1,112)	(1,389)
Prepaid expenses and other	115	(2,445)
Accounts payable	290	1,732
Accrued liabilities	(713)	1,242
Deferred income	191	1,196
Net cash used in operating activities	(14,171)	(5,730)
Cash flows from investing activities
Purchases of property and equipment	(2,567)	(1,542)
Purchases of intangible assets	(17)
Cash paid for acquisition, net of cash acquired	(1,716)
Proceeds on sales of property and equipment		22
Decrease in restricted cash	57	225
Net cash used in investing activities	(4,243)	(1,295)
Cash flows from financing activities
Proceeds from issuance of preferred ordinary shares		2,942
Proceeds from exercise of share options and warrants	13	17
Proceeds from term loan		6,000
Payments on loan	(139)	(60)
Payments on revolving line of credit		(1,500)
Net cash (used in) provided by financing activities	(126)	7,399
Effect of exchange rate changes on cash and cash equivalents	53	83
Net (decrease) increase in cash and cash equivalents, excluding restricted cash	(18,487)	457
Cash and cash equivalents at beginning of period	76,494	12,578
Cash and cash equivalents at end of period	58,007	13,035
Noncash investing and financing activities:
Fair value of warrant issued with convertible notes		136
Warrants liability reclassified to additional paid-in capital upon exercise of warrants	$ 318