CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net (loss) income	$ (4,253)	$ 5,557
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Depreciation and amortization	8,014	9,352
Recovery from doubtful accounts	(205)	(158)
Stock-based compensation expense	5,344	3,398
Non-cash interest expense	207	147
Unrealized foreign currency transaction (gains) losses	(4,043)	(317)
Deferred tax benefit	(6,514)	(16)
Changes in operating assets and liabilities:
Accounts receivable	8,935	7,668
Inventories	8,940	5,424
Prepaid expenses and other current assets	784	833
Accounts payable	347	(5,666)
Accrued expenses, compensation and benefits and other liabilities	(17,362)	(14,842)
Income taxes payable	770	(583)
Deferred revenues	(27,178)	(36,879)
Net Cash Used in Operating Activities	(26,214)	(26,082)
Cash flows from investing activities:
Purchases of property and equipment	(6,742)	(6,391)
Payments for business and technology acquisitions, net of cash acquired	(65,967)	0
Proceeds from divestiture of consumer business	0	1,500
(Increase) decrease in other long-term assets	(850)	11
Increase in restricted cash	(2,330)	0
Net cash used in investing activities	(75,889)	(4,880)
Cash flows from financing activities:
Proceeds from long-term debt, net of issuance costs	121,150	0
Cash paid for capped call transactions	(10,125)	0
Proceeds from the issuance of common stock under employee stock plans	2,804	1
Common stock repurchases for tax withholdings for net settlement of equity awards	1,299	141
Proceeds from revolving credit facilities	29,500	11,500
Payments on revolving credit facilities	(29,500)	6,500
Payments for credit facility issuance costs	(505)	0
Net cash provided by financing activities	112,025	4,860
Effect of exchange rate changes on cash and cash equivalents	(331)	948
Net increase (decrease) in cash and cash equivalents	9,591	(25,154)
Cash and cash equivalents at beginning of period	25,056	48,203
Cash and cash equivalents at end of period	34,647
Cash paid for income taxes, net of refunds	877	1,294
Cash paid for interest	981	641
Long-term Debt [Member]
Cash flows from financing activities:
Issuance costs for long-term debt	581	0
Line of Credit [Member]
Cash flows from financing activities:
Issuance costs for long-term debt	$ 634	$ 0