Quarterly Results of Operations (Unaudited)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Quarterly Results of Operations (Unaudited)

Quarterly Results of Operations (Unaudited):

	Quarter Ended
	March 31			June 30			September 30			December 31
	(In thousands, except per share data)
	Unaudited
2017
Revenues	$	119,228		$	127,922		$	100,346		$	107,971
Cost of sales	82,440			87,549			63,050			72,356
Gross profit	36,788			40,373			37,296			35,615
Operating income (loss)	(870		)	(1,114		)	(62,045		)	(5,110		)
Net income (loss)	94			15			(29,260		)	(71,492		)
Earnings (loss) per share:
Basic (1)	$	—		$	—		$	(0.78	)	$	(1.90	)
Diluted (1)	—			—			(0.78		)	(1.90		)
2016
Revenues	$	166,561		$	142,439		$	123,640		$	106,091
Cost of sales	93,096			79,881			77,633			77,794
Gross profit	73,465			62,558			46,007			28,297
Operating income (loss)	49,343			45,217			22,933			(4,634		)
Net income (loss)	36,769			36,137			19,013			1,302
Earnings (loss) per share:
Basic (1)	$	0.97		$	0.96		$	0.51		$	0.03
Diluted (1)	$	0.97		$	0.96		$	0.51		$	0.03

(1) The sum of the quarterly per share amounts may not equal the annual amount reported, as per share amounts are computed independently for each quarter and for the full year.