Voluntary Reorganization under Chapter 11 - Condensed Balance Sheet of Debtors-in-Possession (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 80,011	$ 24,176
Receivables, net of allowances	574,146	589,263
Inventories	250,485	255,484
Prepaid expenses and other current assets	60,108	30,665
Total current assets	966,667	912,280
Property, plant and equipment, net	820,366	1,006,182
Operating lease right of use assets	275,596	0
Identifiable intangible and other assets, net	165,928	197,512
Total assets	2,228,557	2,118,492
Current liabilities:
Accounts payable and accrued expenses	565,732	699,661
Current maturities of long-term debt and finance leases	440,385	1,174
Operating lease liabilities	86,297	0
Total current liabilities	1,092,414	700,835
Long-term debt, net	4,670	905,170
Long-term operating lease liabilities	203,477	0
Other long-term liabilities	65,777	184,048
Liabilities subject to compromise	1,027,393	0
Commitments and contingencies (Note 20)
Total stockholders’ equity	(170,240)	314,732	$ 655,947	$ 610,556
Total	2,228,557	$ 2,118,492
Debtors-in-Possession
Current assets:
Cash and cash equivalents	73,163
Receivables, net of allowances	22,812
Inventories	249,330
Prepaid expenses and other current assets	61,096
Total current assets	406,401
Property, plant and equipment, net	820,268
Operating lease right of use assets	275,596
Identifiable intangible and other assets, net	152,772
Investment in nondebtor subsidiaries	19,191
Amounts due from nondebtor subsidiaries	203,478
Total assets	1,877,706
Current liabilities:
Accounts payable and accrued expenses	237,944
Current maturities of long-term debt and finance leases	260,385
Operating lease liabilities	86,297
Total current liabilities	584,626
Long-term debt, net	4,670
Long-term operating lease liabilities	203,477
Other long-term liabilities	271,905
Liabilities subject to compromise	1,027,393
Commitments and contingencies (Note 20)
Total stockholders’ equity	(214,365)
Total	$ 1,877,706