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Nature of Operations and Significant Accounting Policies (Details) Treasury Stock (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Equity, Class of Treasury Stock [Line Items]
Retirement of PICO common stock, shares	1,409
Retirement of PICO common stock, value	$ 0
Treasury Stock
Equity, Class of Treasury Stock [Line Items]
Retirement of PICO common stock, shares	1,409
Retirement of PICO common stock, value	$ 22,871

Equity impact of the par value of shares of common and preferred stock retired from treasury during the period. This element is used only when Treasury Stock is accounted for under the cost versus the par value method.

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