FINANCIAL INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2013

Cash and Cash Equivalents and Investments from Continuing Operations

Cash and cash equivalents from our continuing operations consist of the following as of June 30, 2013 and December 31, 2012 (dollars in thousands):

	June 30, 2013		December 31, 2012
Cash	$	85,781	$	136,783
Money market funds		80,140		103,776
Cash and cash equivalents, unrestricted		165,921		240,559
Restricted cash		11,966		97,878
Total cash and cash equivalents	$	177,887	$	338,437

Restricted Cash Balances

Restricted cash balances as of June 30, 2013 and December 31, 2012 are comprised of (dollars in thousands):

	June 30, 2013		December 31, 2012
Cash collateral for amounts under:
Credit Agreement	$	—	$	88,000
Letters of credit		11,966		7,376
Funds restricted for legal matter		—		2,502
Total restricted cash	$	11,966	$	97,878

Investments from Continuing Operations

Investments from our continuing operations consist of the following as of June 30, 2013 and December 31, 2012 (dollars in thousands):

	June 30, 2013
			Gross Unrealized
	Cost		Gain		(Loss)			Fair Value
Short-term investments (available for sale):
U.S. Treasury Bills	$	63,953	$	4	$	(10	)	$	63,947
Long-term investments (available for sale):
Municipal bond		7,850		—		(468	)	$	7,382
Total investments (available for sale)	$	71,803	$	4	$	(478	)	$	71,329

	December 31, 2012
			Gross Unrealized
	Cost		Gain		(Loss)			Fair Value
Short-term investments (available for sale):
U.S. Treasury Bills	$	63,879	$	4	$	(7	)	$	63,876
Long-term investments (available for sale):
Municipal bond		7,850		—		(468	)		7,382
Total investments (available for sale)	$	71,729	$	4	$	(475	)	$	71,258

Investments Measured at Fair Value on Recurring Basis

Investments measured at fair value on a recurring basis subject to the disclosure requirements of FASB ASC Topic 820 at June 30, 2013 and December 31, 2012 were as follows (dollars in thousands):

	As of June 30, 2013
	Level 1		Level 2		Level 3		Total
U.S. Treasury bills	$	63,947	$	—	$	—	$	63,947
Municipal bond		—		—		7,382		7,382
Totals	$	63,947	$	—	$	7,382	$	71,329

	As of December 31, 2012
	Level 1		Level 2		Level 3		Total
U.S. Treasury bills	$	63,876	$	—	$	—	$	63,876
Municipal bond		—		—		7,382		7,382
Totals	$	63,876	$	—	$	7,382	$	71,258

Assets Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3)

The following table presents a rollforward of our assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) as defined in FASB ASC Topic 820 for the year to date ended June 30, 2013 (dollars in thousands):

Balance at December 31, 2012	$	7,382
Unrealized gain (loss)		—
Balance at June 30, 2013	$	7,382