QUARTERLY RESULTS (UNAUDITED) (Notes)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

QUARTERLY RESULTS (UNAUDITED)

QUARTERLY RESULTS (UNAUDITED)

The following information has been derived from unaudited consolidated financial statements that, in the opinion of management, include all normal recurring adjustments necessary for a fair presentation of such information.

(In thousands, except per share data)	Quarter Ended
	2017												2016
	Dec. 31			Sept. 30			June 30			Mar. 31			Dec. 31			Sept. 30			June 30			Mar. 31
Net revenues	$	107,258		$	105,265		$	102,373		$	104,107		$	115,295		$	119,019		$	134,069		$	143,547
Cost of revenues	46,862			42,957			40,670			38,598			43,876			41,678			44,320			41,533
Amortization of intangible assets	1,950			1,950			1,950			1,950			1,950			1,950			1,950			1,950
Gross profit	58,446			60,358			59,753			63,559			69,469			75,391			87,799			100,064
Operating expenses:
Research and development	16,308			16,025			16,991			18,888			18,773			19,953			21,433			21,405
Marketing and selling	25,776			25,652			29,018			25,811			21,311			27,231			30,177			31,619
General and administrative	10,624			15,193			13,644			14,431			13,112			13,822			16,818			17,719
Amortization of intangible assets	362			362			363			363			363			567			782			786
Restructuring costs (recoveries), net	595			(582		)	6,063			983			4,959			5,314			(213		)	2,777
Total operating expenses	53,665			56,650			66,079			60,476			58,518			66,887			68,997			74,306
Operating income (loss)	4,781			3,708			(6,326		)	3,083			10,951			8,504			18,802			25,758
Other expense, net	(5,203		)	(4,701		)	(3,918		)	(4,846		)	(4,622		)	(4,707		)	(5,159		)	(4,183		)
(Loss) income before income taxes	(422		)	(993		)	(10,244		)	(1,763		)	6,329			3,797			13,643			21,575
Provision for (benefit from) income taxes	459			(1,065		)	587			152			1,108			(5,321		)	703			635
Net (loss) income	$	(881	)	$	72		$	(10,831	)	$	(1,915	)	$	5,221		$	9,118		$	12,940		$	20,940
Net (loss) income per share – basic and diluted	$	(0.02	)	$	0.00		$	(0.26	)	$	(0.05	)	$	0.13		$	0.23		$	0.33		$	0.53
Weighted-average common shares outstanding – basic	41,216			41,133			40,953			40,772			40,637			40,194			39,678			39,566
Weighted-average common shares outstanding – diluted	41,216			41,355			40,953			40,772			40,746			40,476			39,734			39,640