FINANCING ARRANGEMENTS AND LONG-TERM DEBT (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
FINANCING ARRANGEMENTS AND LONG-TERM DEBT
Long-term debt, total	$ 63,063	$ 70,063
Less current installments on long term debt	10,000	7,000
Long-term debt	53,063	63,063
Aggregate annual maturities of debt obligations
2013	10,000
2014	46,813
Thereafter	6,250
Senior secured credit facility
FINANCING ARRANGEMENTS AND LONG-TERM DEBT
Long-term debt, total	56,813	63,813
Compass convertible notes | Compass
FINANCING ARRANGEMENTS AND LONG-TERM DEBT
Long-term debt, total	$ 6,250	$ 6,250