STOCK-BASED COMPENSATION (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 Plan	Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock option plans	2
Recognized compensation expense	$ 51	$ 64
Recognized compensation expense, net of tax	$ 33	$ 43
Employers Mutual Casualty Company Incentive Stock Option 2003 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Registered shares (in shares)	1,500,000
Time limit for granting awards	10 years
Employers Mutual Casualty Company Stock Incentive 2007 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Registered shares (in shares)	2,000,000
Time limit for granting awards	10 years
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Number of restricted stock shares granted during period (in shares)	62,764
Number of restricted stock shares vested during period (in shares)	14,117
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	5 years
Options exercised during period (in shares)	105,117
Weighted average exercise price of options exercised during period (in dollars per share)	$ 21.20