Supplementary Financial Data Supplementary Financial Data (Tables)

12 Months Ended

Dec. 31, 2014

Supplementary Financial Data [Abstract]

Supplemental Financial Data [Table Text Block]

The following tables set forth our selected consolidated financial and operating data for the quarterly periods indicated.

	December 31, 2014		September 30, 2014		June 30, 2014		March 31, 2014
(In thousands, except per share amounts)	(Unaudited)		(Unaudited)		(Unaudited)		(Unaudited)
Revenue	$	367,964	$	330,767	$	281,608	$	234,841
Gross margin	$	73,759	$	68,509	$	59,587	$	50,877
Net income to common shareholders	$	9,767	$	12,399	$	12,335	$	11,413
Earnings per common share:
Basic	$	0.40	$	0.51	$	0.50	$	0.47
Diluted	$	0.36	$	0.44	$	0.44	$	0.41
Weighted average common shares outstanding:
Basic	24,489		24,474		24,470		24,417
Diluted	29,944		29,921		29,913		29,870
	December 31, 2013		September 30, 2013		June 30, 2013		March 31, 2013
(In thousands, except per share amounts)	(Unaudited)		(Unaudited)		(Unaudited)		(Unaudited)
Revenue	$	336,307	$	275,195	$	234,553	$	190,727
Gross margin	$	67,030	$	54,909	$	46,216	$	38,314
Net income to common shareholders	$	13,043	$	124,092	$	6,045	$	2,397
Earnings per common share:
Basic	$	0.54	$	5.09	$	0.25	$	0.11
Diluted	$	0.48	$	4.22	$	0.25	$	0.11
Weighted average common shares outstanding:
Basic	24,358		24,358		24,271		22,273
Diluted	29,783		29,745		24,646		22,688