(4) Investment in Savoy (Detail) - Condensed Balance Sheet (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets	$ 34,106	$ 34,863
	234,628	229,207
Total liabilities	66,377	67,198
Equity Investment in Savoy
Current assets	18,304
Oil and gas properties, net	21,840
	40,144
Total liabilities	9,960
Partners' capital	30,184
	$ 40,144

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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