CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended										12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016		Sep. 30, 2016		Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues:
Portal revenues	$ 78,345	$ 76,434	$ 79,374	$ 77,198	$ 73,291		$ 74,997		$ 75,513	$ 73,197	$ 311,351	$ 296,998	$ 273,502
Software & services revenues	5,127	8,099	5,952	5,979	5,051		5,376		5,297	5,193	25,157	20,917	18,874
Total revenues	83,472	84,533	85,326	83,177	78,342		80,373		80,810	78,390	336,508	317,915	292,376
Operating expenses:
Cost of portal revenues, exclusive of depreciation & amortization	48,154	47,377	49,009	47,032	45,409		45,140		46,123	43,615	191,572	180,287	168,166
Cost of software & services revenues, exclusive of depreciation & amortization	2,179	3,169	1,779	1,763	1,605		1,495		1,445	1,413	8,890	5,958	5,432
Selling & administrative	13,898	12,091	13,131	11,660	12,880		11,676		11,165	11,342	50,780	47,063	43,098
Depreciation & amortization	1,818	1,810	1,688	1,613	1,675		1,674		1,736	1,664	6,929	6,749	8,385
Total operating expenses	66,049	64,447	65,607	62,068	61,569		59,985		60,469	58,034	258,171	240,057	225,081
Operating income (loss) before income taxes	17,423	20,086	19,719	21,109	16,773		20,388		20,341	20,356	78,337	77,858	67,295
Income tax provision	6,583	6,066	6,950	7,124	3,130	[1]	4,153	[2]	7,280	7,462	26,723	22,025	25,316
Net income	$ 10,840	$ 14,020	$ 12,769	$ 13,985	$ 13,643		$ 16,235		$ 13,061	$ 12,894	$ 51,614	$ 55,833	$ 41,979
Basic net income per share (in usd per share)	$ 0.16	$ 0.21	$ 0.19	$ 0.21	$ 0.20		$ 0.24		$ 0.20	$ 0.19	$ 0.77	$ 0.84	$ 0.63
Diluted net income per share (in usd per share)	$ 0.16	$ 0.21	$ 0.19	$ 0.21	$ 0.20		$ 0.24		$ 0.20	$ 0.19	$ 0.77	$ 0.84	$ 0.63
Weighted average shares outstanding:
Basic (in shares)	66,270	66,267	66,248	66,046	65,981		65,978		65,953	65,739	66,209	65,913	65,555
Diluted (in shares)	66,334	66,267	66,248	66,046	66,041		66,005		65,967	65,739	66,266	65,966	65,640

[1] The Company’s lower effective tax rate in the fourth quarter of 2016 (19%) was primarily attributable to the Company amending its 2014 and 2013 federal income tax returns to recognize favorable benefits related to the domestic production activities deduction, which increased basic and diluted earnings per share by approximately $0.03 during the quarter. (See Note 9)

[2] The Company’s lower effective tax rate in the third quarter of 2016 (20%) was primarily attributable to favorable benefits related to the domestic production activities deduction and federal research and development credit, which increased basic and diluted earnings per share by approximately $0.05 during the quarter. (See Note 9)