CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues	$ 460,454	$ 354,205	$ 344,900
Operating expenses:
Selling & administrative	34,551	35,200	32,747
Enterprise technology & product support	29,491	26,850	23,944
Depreciation & amortization	14,245	12,610	9,117
Total operating expenses	373,021	291,786	269,840
Total operating expenses	87,433	62,419	75,060
Other income:
Interest income	389	2,514	616
Income before income taxes	87,822	64,933	75,676
Income tax provision	19,228	14,503	17,407
Net income	$ 68,594	$ 50,430	$ 58,269
Basic net income per share (in usd per share)	$ 1.01	$ 0.75	$ 0.87
Diluted net income per share (in usd per share)	$ 1.01	$ 0.75	$ 0.87
Weighted average shares outstanding:
Basic (in shares)	67,010	66,884	66,499
Diluted (in shares)	67,117	66,884	66,560
State enterprise revenues
Revenues	$ 331,720	$ 290,281	$ 312,492
Operating expenses:
State enterprise cost of revenues, exclusive of depreciation & amortization	199,901	175,490	187,321
Software & services revenues
Revenues	128,734	63,924	32,408
Operating expenses:
State enterprise cost of revenues, exclusive of depreciation & amortization	$ 94,833	$ 41,636	$ 16,711