PENSION AND OTHER BENEFITS - Costs for defined benefit retirement plan (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Notes to Financial Statements
Service cost	$ 87	$ 95	$ 202	$ 191
Interest cost on benefit obligation	86	93	179	187
Expected return on plan assets	(112)	(106)	(227)	(212)
Amortization of net loss	25	7	61	33
Settlements and curtailments	341		341
Net periodic benefit cost	$ 427	$ 99	$ 556	$ 199