Condensed Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Revenue	$ 181,165		$ 168,856
Operating expense (1):
Cost of revenue	75,714	[1]	61,650	[1]
Sales and marketing	28,428	[1]	27,980	[1]
General and administrative	26,104	[1]	27,327	[1]
Depreciation and amortization	12,387	[1]	11,339	[1]
Total operating expense	142,633	[1]	128,296	[1]
Operating income (loss)	38,532		40,560
Non-operating income (expense):
Interest income (expense), net	585		741
Gain (loss) on sale of investments reclassified from other comprehensive income	(24)		725
Other income (expense), net	304		(521)
Non-operating income (expense), net	865		945
Income before income taxes and equity in net income of unconsolidated entities	39,397		41,505
Equity in net income of unconsolidated entities	599		497
Income tax expense	13,650		12,427
Consolidated net income	26,346		29,575
Net (income) loss attributable to the noncontrolling interest	30		43
Net income attributable to Morningstar, Inc.	$ 26,376		$ 29,618
Net income per share attributable to:
Basic (in dollars per share)	$ 0.59		$ 0.64
Diluted (in dollars per share)	$ 0.58		$ 0.63
Dividends declared per common share	$ 0.17		$ 0.125
Dividends paid per common share	$ 0.17		$ 0
Weighted average shares outstanding:
Basic (in shares)	44,777		46,406
Diluted (in shares)	45,093		46,814

[1] Three months ended March 31 2014 2013(1) Includes stock-based compensation expense of: Cost of revenue $1,762 $1,701Sales and marketing 497 512General and administrative 1,680 1,570Total stock-based compensation expense $3,939 $3,783