|
DEBT (Details) (USD $)
In Thousands, unless otherwise specified |
1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2012
|
Dec. 31, 2011
|
May 31, 2011
2010 Credit Facility
item
|
Jun. 30, 2012
2010 Credit Facility
|
Jun. 30, 2011
2010 Credit Facility
|
Jun. 30, 2012
2010 Credit Facility
|
Jun. 30, 2011
2010 Credit Facility
|
Dec. 31, 2010
2010 Credit Facility
|
May 31, 2012
2010 Credit Facility
|
Nov. 30, 2010
2010 Credit Facility
|
Apr. 16, 2010
2010 Credit Facility
|
Jun. 30, 2012
2010 Credit Facility
Minimum
|
Jun. 30, 2011
2010 Credit Facility
Minimum
|
Jun. 30, 2012
2010 Credit Facility
Minimum
|
Jun. 30, 2011
2010 Credit Facility
Minimum
|
Jun. 30, 2012
2010 Credit Facility
Maximum
|
Jun. 30, 2011
2010 Credit Facility
Maximum
|
Jun. 30, 2012
2010 Credit Facility
Maximum
|
Jun. 30, 2011
2010 Credit Facility
Maximum
|
|
| Debt | |||||||||||||||||||
| Maximum borrowing capacity | $ 135,000 | $ 150,000 | $ 100,000 | ||||||||||||||||
| Available working capital borrowings | 23,500 | 23,500 | |||||||||||||||||
| Drawdowns during the period | 1,500 | ||||||||||||||||||
| Remaining borrowing capacity | 33,750 | 33,750 | |||||||||||||||||
| Number of consecutive semi-annual reductions in total commitment | 11 | ||||||||||||||||||
| Amount of semi-annual reductions in maximum borrowing capacity through the maturity date | 5,000 | ||||||||||||||||||
| Repayment of the outstanding debt | |||||||||||||||||||
| 2015 | 1,250 | 1,250 | |||||||||||||||||
| 2016 | 100,000 | 100,000 | |||||||||||||||||
| Total debt | $ 101,250 | $ 101,250 | $ 101,250 | $ 101,250 | |||||||||||||||
| Effective interest rate including the range of interest rates on the debt but excluding the impact of unused commitment fees | |||||||||||||||||||
| Effective Interest Rate (as a percent) | 3.24% | 3.29% | 3.25% | 3.30% | |||||||||||||||
| Range of Interest Rates (excluding impact of swaps and unused commitment fees) (as a percent) | 3.24% | 3.25% | 3.24% | 3.25% | 3.25% | 3.31% | 3.30% | 3.31% | |||||||||||