v2.4.0.6

Basis of Presentation (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Summary of investment categories
Cost	$ 2,767	$ 2,767
Gross unrealized gains	1,166
Gross unrealized losses
Estimated fair value	3,933	2,767
Available-for-sale securities [Member]
Summary of investment categories
Cost	1,426	1,426
Gross unrealized gains	1,166
Gross unrealized losses
Estimated fair value	2,592	1,426
Certificates of deposit - restricted [Member]
Summary of investment categories
Cost	1,341	1,341
Gross unrealized gains
Gross unrealized losses
Estimated fair value	$ 1,341	$ 1,341

X

- Definition

This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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- Definition

Amount of debt securities categorized neither as held-to-maturity nor trading.

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