Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 62,148	$ 51,433
Notes receivable		33,667
Income tax refund receivable	2,464
Other current assets	1,889	1,786
Total current assets	66,501	86,886
Investments in affiliates	14,559	104,792
Long-term deferred tax assets	145,994	112,898
Other assets	126	50
Total assets	227,180	304,626
Current liabilities:
Accrued employment costs	2,087	2,300
Other current liabilities	12,099	13,424
Total current liabilities	14,186	15,724
Pension and other postretirement liabilities	17,915	20,793
Long-term liabilities	84,602	92,469
Total liabilities	$ 116,703	$ 128,986
Commitments and contingencies
Shareholders' equity:
Preferred stock, 0.01 par value; 10,000,000 shares authorized, no shares issued and outstanding
Common Stock:
Paid-in capital	$ 1,020,090	$ 1,017,520
Treasury stock (at cost), 154,494 shares of voting common stock	(9,592)	(9,592)
Accumulated deficit	(871,775)	(803,378)
Accumulated other comprehensive loss	(28,557)	(29,221)
Total shareholders' equity	110,477	175,640
Total liabilities and shareholders' equity	227,180	304,626
Voting Common Stock [Member]
Common Stock:
Common stock, 0.01 par value	216	216
Nonvoting Common Stock [Member]
Common Stock:
Common stock, 0.01 par value	$ 95	$ 95