Other investments measured at fair value on a non-recurring basis (Details) (USD $)	3 Months Ended
	Mar. 31, 2014
Other investments measured at fair value on a non-recurring basis
Company received distributions from investments in diversified businesses and real estate approximately	$ 107,000
Company made contributions in this type of investment totaling.	358,000
The amount of the Company's unfunded commitments related to the aforementioned investments is approximately in millions	1.3
The Level 3 real estate and related investments include one investment in a commercial building located near the Company's offices	947,000
Carrying value of the Level 3 real estate and related investments	724,000
The Level 3 other investments include private bank stocks totaling	300,000
Also included in this category is an investment made in March 2014 in a private placement by J.P. Morgan	300,000
The only activity in investments classified within level 3 of the fair value hierarchy in the reinsurance company.	$ 300,000