Unaudited Quarterly Financial Results (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Unaudited Quarterly Financial Information

	2014
	Dec. 31,		Sept. 30,		June 30,		Mar. 31,
	(in thousands, except per share amounts)
Revenues	$	441,023	$	442,443	$	434,424	$	406,851
Gross profit	142,537		144,838		141,905		128,155
Income from continuing operations	19,526		20,723		19,641		13,605
Income from discontinued operations, net of income taxes	947		1,282		1,148		312
Net income	$	20,473	$	22,005	$	20,789	$	13,917
Basic earnings per common share:
Continuing operations	$	0.38	$	0.39	$	0.36	$	0.25
Discontinued operations	0.01		0.02		0.02		0.01
Net income	$	0.39	$	0.41	$	0.38	$	0.26
Diluted earnings per common share:
Continuing operations	$	0.37	$	0.38	$	0.36	$	0.25
Discontinued operations	0.02		0.03		0.02		—
Net income	$	0.39	$	0.41	$	0.38	$	0.25

	2013
	Dec. 31,		Sept. 30,		June 30,		Mar. 31,
	(in thousands, except per share amounts)
Revenues	$	396,070	$	394,400	$	380,779	$	351,852
Gross profit	120,985		119,016		113,105		101,769
Income from continuing operations	16,321		18,656		6,649		9,514
Income from discontinued operations, net of income taxes	16,089		1,494		690		15,099
Net income	$	32,410	$	20,150	$	7,339	$	24,613
Basic earnings per common share:
Continuing operations	$	0.30	$	0.35	$	0.12	$	0.18
Discontinued operations	0.30		0.03		0.02		0.28
Net income	$	0.60	$	0.38	$	0.14	$	0.46
Diluted earnings per common share:
Continuing operations	$	0.30	$	0.34	$	0.12	$	0.18
Discontinued operations	0.29		0.03		0.02		0.28
Net income	$	0.59	$	0.37	$	0.14	$	0.46