CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 11,392	$ (11,385)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	10,855	16,521
Amortization of inventory step-up in fair value	0	4,666
Share-based compensation	7,287	6,272
Deferred tax, net	(818)	(570)
Gain on sales of securities	(54)	(1,240)
Other non-cash transactions	130	356
Changes in operating assets and liabilities:
Accounts receivable, net	(5,839)	1,339
Inventories	(3,132)	(1,207)
Prepaid expenses and other assets	639	1,883
Accounts payable and accrued liabilities	(8,423)	(2,599)
Deferred revenue	(1,401)	(6,136)
Other long-term liabilities	500	(266)
Net cash provided by operating activities	11,136	7,634
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of business	(14,000)	0
Proceeds from sales of securities	0	2,162
Proceeds on sale of fixed assets	0	106
Capital expenditures	(6,092)	(3,036)
Purchase of technology rights	(341)	0
Net cash used in investing activities	(20,433)	(768)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of common stock, net of issuance costs	51,421	1,978
Repayments of long-term debt	(2,000)	(14,500)
Net cash provided by (used in) financing activities	49,421	(12,522)
Effect of exchange rate changes on cash and cash equivalents	(450)	28
Net increase (decrease) in cash and cash equivalents	39,674	(5,628)
Cash and cash equivalents at beginning of period	79,923	57,128
Cash and cash equivalents at end of period	$ 119,597	$ 51,500