CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 6,056	$ (9,001)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	16,222	23,745
Amortization of inventory step-up in fair value	0	4,666
Share-based compensation	10,943	9,436
Deferred tax, net	(800)	(1,475)
Gain on sales of securities	(53)	(1,684)
Other non-cash transactions	419	575
Changes in operating assets and liabilities:
Accounts receivable, net	(955)	4,432
Inventories	(2,488)	75
Prepaid expenses and other assets	450	(317)
Accounts payable and accrued liabilities	6,042	4,229
Deferred revenue	(2,085)	(5,985)
Other long-term liabilities	508	(364)
Net cash provided by operating activities	34,259	28,332
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of business	(14,000)	0
Purchase of investments	(30,000)	0
Proceeds from sales of securities	0	2,162
Proceeds on sale of fixed assets	0	109
Capital expenditures	(9,217)	(4,310)
Purchase of technology rights	(341)	0
Net cash used in investing activities	(53,558)	(2,039)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of common stock, net of issuance costs	50,486	821
Repayments of long-term debt	(3,000)	(15,500)
Net cash provided by (used in) financing activities	47,486	(14,679)
Effect of exchange rate changes on cash and cash equivalents	(517)	(415)
Net increase in cash and cash equivalents	27,670	11,199
Cash and cash equivalents at beginning of period	79,923	57,128
Cash and cash equivalents at end of period	$ 107,593	$ 68,327