Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 74,125	$ 5,926
Notes receivable	33,667	67,333
Income taxes receivable	12,869	13,234
Deferred tax assets		3,784
Other current assets	998	568
Total current assets	121,659	90,845
Long-term receivables		33,667
Investments in affiliates	175,532	116,820
Long-term deferred tax assets	74,791	83,708
Other assets	71	2,700
Total assets	372,053	327,740
Current liabilities:
Accrued employment costs	1,570	960
Other current liabilities	13,871	8,750
Total current liabilities	15,441	9,710
Pension and other postretirement liabilities	15,446	17,003
Long-term liabilities	93,875	93,117
Total liabilities	124,762	119,830
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	1,015,812	1,015,656
Treasury stock (at cost), 154,494 shares of voting common stock	(9,592)	(9,592)
Accumulated deficit	(739,373)	(777,549)
Accumulated other comprehensive loss	(19,867)	(20,916)
Total shareholders' equity	247,291	207,910
Total liabilities and equity	372,053	327,740
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