Consolidated and Combined Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 29,036	$ 0
Accounts receivable (less allowance of $847 and $746, respectively)	51,136	36,958
Inventories	6,764	6,184
Prepaid expenses and other current assets	6,021	1,937
Total current assets	92,957	45,079
Property, plant and equipment (less accumulated depreciation of $268,513 and $256,603, respectively)	242,341	185,548
Goodwill	9,157	0
Other intangible assets, net	11,021	2,001
Other assets	3,980	2,018
Total assets	359,456	234,646
Current liabilities:
Accounts payable	14,893	10,573
Accrued compensation and benefits	21,364	12,404
Deferred revenue	33,443	21,136
Other current liabilities	6,675	4,097
Total current liabilities	76,375	48,210
Accrued employee compensation and benefits	2,047	4,201
Accrued pension and retirement benefits	11,605	5,318
Deferred income taxes	16,953	0
Multi-employer plan withdrawal liability	0	4,100
Other long-term liabilities	2,777	3,570
Commitments and contingencies (Note 16)	0	0
Stockholders' equity:
Common stock - $0.01 par value, authorized 100,000,000 shares; issued and outstanding: 24,407,533 shares at December 31, 2015	244	0
Preferred stock - $0.01 par value, authorized 10,000,000 shares; issued and outstanding: 0 shares at December 31, 2015	0	0
Additional paid-in capital	247,014	0
Parent company equity	0	169,575
Accumulated other comprehensive loss	(2,587)	(2,782)
Retained earnings	2,672	0
Total stockholders' equity	247,343	166,793
Noncontrolling interests	2,356	2,454
Total equity	249,699	169,247
Total liabilities and equity	$ 359,456	$ 234,646