Investments (Details 5) (USD $)	Mar. 31, 2013
Certain Loans Acquired in Transfer Accounted for as Available-for-sale Debt Securities, Acquired During Period [Abstract]
Certain Loans Acquired in Transfer Accounted for as Available-for-sale Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition	$ 91,863,000
Certain Loans Acquired in Transfer Accounted for as Available-for-sale Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition	72,940,000
Certain Loans Acquired in Transfer Accounted for as Available-for-sale Debt Securities, Acquired During Period, at Acquisition, at Fair Value	$ 50,874,000

The fair value of the loans at the acquisition date. This relates to loans accounted for as available-for-sale debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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The investor's estimate, at acquisition, of the amount and timing of undiscounted principal, interest, and other cash flows expected to be collected. This would be the investor's best estimate of cash flows, including the effect of prepayments if considered, that is used in determining the acquisition price, and, in a business combination, the investor's estimate of fair value for purposes of acquisition price allocation. This relates to loans accounted for as available-for-sale debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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- Definition

The total undiscounted amount of all uncollected contractual principal and contractual interest payments both past due and scheduled for the future, adjusted for the timing of prepayments, if considered, less any reduction by the investor at the acquisition date. This relates to loans accounted for as available-for-sale debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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