Affinity Acquisition Affinity Acquisition (Fair Value of Assets Acquired and Liabilities Assumed) (Details) (USD $) In Thousands, unless otherwise specified			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Affinity [Member]	Oct. 02, 2012 Affinity [Member]	Oct. 02, 2012 Affinity [Member] Customer Relationships [Member]	Oct. 02, 2012 Affinity [Member] Affiliate Network [Member]	Oct. 02, 2012 Affinity [Member] Trademarks [Member]
Business Acquisition [Line Items]
Cash and cash equivalents, including escrow				$ 504
Accounts receivable				1,201
Property, plant, and equipment				410
Other assets and liabilities, net				320
Intangible assets					5,100	1,710	760
Total assets acquired at fair value				10,005
Accounts payable				(972)
Accrued expenses				(811)
Deferred tax liability				(2,221)
Total liabilities assumed				(4,004)
Net assets acquired				6,001
Goodwill	9,900	0		9,900
Employee retention bonus expense			$ 857