INVESTMENTS Debt and Short-term Investments (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($) item	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Other invested assets
Other Investments	$ 25,279		$ 20,666
Total tax benefit on investments in housing tax credit partnership	400	$ 300
Investment in FHLBC	1,600		1,600
Cash and Short-term Investments
Cash	14,569	$ 31,514	11,081	$ 30,620
Short-term investments, at cost which approximates fair value	$ 19,405		6,262
Investment In Low Income Housing Tax Credit Partnership Net Of Amortization
Other invested assets
Number of investments in low income housing tax credit partnerships | item	3
Other Investments	$ 18,600		14,000
Investment in Real Estate Fund
Other invested assets
Other Investments	$ 5,000		$ 5,000