14. Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Quarterly financial data table

	Quarter Ended
	March 31,		June 30,		September 30,		December 31,
	(In thousands, except per share data)
2016
Revenues	$	100,649	$	104,933	$	108,516	$	108,183
Income before income tax expense		12,229		12,325		12,455		12,651
Net income		7,214		7,272		7,348		7,465
Earnings per share:
Basic	$	0.29	$	0.30	$	0.31	$	0.31
Diluted		0.24		0.25		0.26		0.26
2015
Revenues	$	85,989	$	88,361	$	93,991	$	95,308
Income before income tax expense		14,749		15,200		15,649		15,783
Net income		8,333		8,537		8,843		8,967
Earnings per share:
Basic	$	0.33	$	0.33	$	0.34	$	0.35
Diluted		0.26		0.27		0.28		0.29
2014
Revenues	$	68,146	$	71,594	$	77,050	$	83,467
Income before income tax expense		11,764		12,329		13,804		14,346
Net income		6,705		7,026		7,776		8,010
Earnings per share:
Basic	$	0.28	$	0.28	$	0.31	$	0.31
Diluted		0.21		0.22		0.24		0.25