The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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- Definition

The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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Operating Segment and Enterprise Wide Reporting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summary of reportable segments
Revenue	$ 75,066	$ 68,511	$ 79,093	$ 70,260	$ 74,650	$ 69,774	$ 73,450	$ 65,742	$ 292,930	$ 283,616	$ 250,726
Direct Margin									191,454	186,891	165,454
Selling, marketing, administrative and other expenses									(156,929)	(146,957)	(131,084)
Amortization of intangible assets									(2,445)	(2,562)	(3,620)
Reorganization costs									(1,421)	(375)
Other income and gains/losses on investments									851	1,648	3,550
Income before income taxes									31,510	38,645	34,300
BT [Member]
Summary of reportable segments
Revenue									159,216	154,777	143,992
Direct Margin									105,288	103,616	97,699
M&S [Member]
Summary of reportable segments
Revenue									120,885	115,666	95,534
Direct Margin									82,225	77,510	63,002
Events [Member]
Summary of reportable segments
Revenue									12,829	13,173	11,200
Direct Margin									$ 3,941	$ 5,765	$ 4,753