CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net income	$ 6,865	$ 19,797
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	13,936	13,721
Recovery from doubtful accounts	(175)	(177)
Stock-based compensation expense	7,731	2,718
Non-cash interest expense	1,544	220
Unrealized foreign currency transaction gains	(5,098)	(494)
Deferred tax benefit	(6,504)	(6)
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable	6,844	931
Inventories	4,028	6,145
Prepaid expenses and other current assets	1,772	646
Accounts payable	4,932	585
Accrued expenses, compensation and benefits and other liabilities	(17,764)	(14,842)
Income taxes payable	1,268	(603)
Deferred revenues	(55,466)	(49,471)
Net Cash Used in Operating Activities	(36,087)	(20,830)
Cash flows from investing activities:
Purchases of property and equipment	(11,110)	(11,660)
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	(575)	51
Increase in restricted cash	(1,047)	0
Net cash used in investing activities	(78,699)	(10,109)
Cash flows from financing activities:
Proceeds from long-term debt, net of issuance costs	120,401	0
Payments for repurchase of common stock	7,999	0
Cash paid for capped call transactions	(10,125)	0
Proceeds from the issuance of common stock under employee stock plans	3,113	1
Common stock repurchases for tax withholdings for net settlement of equity awards	1,442	318
Proceeds from revolving credit facilities	49,500	20,500
Payments on revolving credit facilities	(39,500)	12,500
Payments for credit facility issuance costs	(1,193)	0
Net cash provided by financing activities	112,755	7,683
Effect of exchange rate changes on cash and cash equivalents	(1,045)	(2,471)
Net decrease in cash and cash equivalents	(3,076)	(25,727)
Cash and cash equivalents at beginning of period	25,056	48,203
Cash and cash equivalents at end of period	21,980	22,476
Cash paid for income taxes, net of refunds	1,538	2,002
Cash paid for interest	1,492	1,026
Long-term Debt [Member]
Cash flows from financing activities:
Issuance costs for long-term debt	$ 130	$ 0