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Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Cash paid for:
Interest	$ 509	$ 617	$ 520	$ 664
Income taxes for continuing operations	2,525	222	3,123	1,529
Income taxes for discontinued operations				5
Total	3,034	839	3,643	2,198
Income Taxes
Tax expense	$ 5,735	$ 3,049	$ 7,778	$ 2,105
Effective tax rate (as a percent)			41.30%	58.10%

- 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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