Accounting for Stock-Based Compensation (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2012

Dec. 31, 2011

Accounting for Stock-Based Compensation

Summary of option activity under the company's employee stock option plan

Options	Shares		Weighted-AverageExercisePrice		Weighted-AverageRemainingContractualTerm	AggregateIntrinsicValue
Outstanding at beginning of year	2,426		$	53.60
Granted	3,461		$	11.56
Exercised	—		$	—
Expired or forfeited	—		$	—
Outstanding at end of period	5,887		$	28.88	4.5	$	4,578
Options exercisable at end of period	4,637		$	25.88	4.6	$	4,578
Weighted-average fair value of options granted during the year	$	9.34

	2011								2010
	Shares			WeightedAverageExercisePrice		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value		Shares			WeightedAverageExercisePrice
Outstanding at beginning of year	316			$	322.00				203			$	514.00
Granted	2,250			$	40.00				176			$	228.00
Exercised	—			$	—				—			$	—
Expired or forfeited	(140		)	$	440.00				(63		)	$	682.00
Outstanding at end of year	2,426			$	53.60	4.8	$	—	316			$	322.00
Exercisable at end of year	1,176					4.7	$	—	316
Weighted-average fair value of options granted during the year	$	34.20							$	164.00
Price range of options
Outstanding	$40.00-$228.00								$228.00-$440.00
Exercised	$	—							$	—
Expired or forfeited	$	440.00							$	682.00