CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
OPERATING ACTIVITIES
Net loss	$ (5,193)	$ (13,395)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	19,410	22,150
Amortization of intangibles	1,043	1,043
Pension settlement expense	3,691
Share-based compensation expense	1,568	1,303
Provision for losses on accounts receivable	84	969
Deferred income tax benefit	(3,493)	(8,756)
Gain on sale of property and equipment	(214)	(212)
Changes in operating assets and liabilities:
Receivables	(19,268)	(9,886)
Prepaid expenses	(3,163)	(2,042)
Other assets	(1,710)	(964)
Income taxes	(3,610)	(1,548)
Accounts payable, accrued expenses, and other liabilities	17,065	11,124
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	6,210	(214)
INVESTING ACTIVITIES
Purchases of property, plant and equipment, net of financings	(8,654)	(3,440)
Proceeds from sale of property and equipment	746	842
Purchases of short-term investments		(3,752)
Proceeds from sale of short-term investments		2,940
Capitalization of internally developed software and other	(1,879)	(2,090)
NET CASH USED IN INVESTING ACTIVITIES	(9,787)	(5,500)
FINANCING ACTIVITIES
Payments on long-term debt	(7,765)	(10,955)
Net change in bank overdraft and other	1,400	(1,909)
Net change in restricted cash, cash equivalents, and short-term investments	(1)	3,754
Payment of common stock dividends	(819)	(807)
Proceeds from the exercise of stock options	1,136
NET CASH USED IN FINANCING ACTIVITIES	(6,049)	(9,917)
NET DECREASE IN CASH AND CASH EQUIVALENTS	(9,626)	(15,631)
Cash and cash equivalents at beginning of period	105,354	90,702
CASH AND CASH EQUIVALENTS AT END OF PERIOD	95,728	75,071
NONCASH INVESTING ACTIVITIES
Accruals for equipment received	$ 102	$ 173