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Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Cash paid for:
Interest	$ 320	$ 388	$ 984	$ 1,198
Income taxes	1,578	118	3,112	1,116
Total	1,898	506	4,096	2,314
Income Taxes
Tax expense (benefit)	$ 4,003	$ (6,293)	$ 6,068	$ (7,479)
Effective tax rate (as a percent)			47.50%	16.20%

- Definition

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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- Definition

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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