Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Operating Activities:
NET (LOSS) INCOME	$ (12,529)	$ 314
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	3,104	3,354
Stock-based compensation	2,242	742
Impairment of intangible assets	4,724	0
Loss (gain) on disposal/sale of property and equipment	5	(9)
Restructuring costs	109	440
Payment of withholding tax on stock based compensation	(187)	(400)
Deferred tax provision	4,203	132
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	2,770	7,655
Inventories	2,325	(1,342)
Prepaid expenses and other assets	132	(300)
Accounts payable	(1,907)	137
Income taxes payable	(54)	(190)
Other accrued liabilities	(585)	(2,400)
Deferred revenue	41	(1,054)
Net cash provided by operating activities	4,393	7,079
Investing Activities:
Capital expenditures	(1,392)	(1,297)
Proceeds from disposal of property and equipment	1	16
Purchases of investments	(28,519)	(9,266)
Redemptions/maturities of short-term investments	31,274	23,768
Purchase of assets	0	(20,500)
Net cash provided by (used in) investing activities	1,364	(7,279)
Financing Activities:
Proceeds from issuance of common stock	350	624
Payments for repurchase of common stock	(4,095)	(2,812)
Cash dividends	(1,723)	(1,859)
Net cash used in financing activities	(5,468)	(4,047)
Net increase (decrease) in cash and cash equivalents	289	(4,247)
Effect of exchange rate changes on cash	(39)	(1)
Cash and cash equivalents, beginning of year	7,055	20,432
Cash and Cash Equivalents, End of Period	$ 7,305	$ 16,184