Income Taxes - Deferred Tax Balances (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current [Member]
Retirement benefits	$ 614	$ 808
Allowance for doubtful accounts	1,984	755
Insurance and litigation reserves	580	683
Postretirement benefits	0	0
Supplemental retirement benefits	0	69
Performance incentives	3,002	3,139
Equity-based compensation	349	239
Alternative minimum tax carryforward	0	0
Insurance settlement	10	26
Operating loss carryforward	0	0
Uncertain tax positions	0	0
Interest rate swaps and other	679	786
Deferred Tax Assets, Gross, Total	7,218	6,505
Valuation allowance	(710)	0
Total deferred income tax assets, net	6,508	6,505
Depreciation	0	0
Europe pension and other	0	0
Amortization and other	360	405
Total deferred income tax liabilities	360	405
Non Current [Member]
Retirement benefits	14,397	9,907
Allowance for doubtful accounts	0	0
Insurance and litigation reserves	260	424
Postretirement benefits	2,543	2,259
Supplemental retirement benefits	2,501	2,303
Performance incentives	520	383
Equity-based compensation	395	449
Alternative minimum tax carryforward	0	447
Insurance settlement	9,425	9,698
Operating loss carryforward	9,425	3,010
Uncertain tax positions	7,700	7,911
Interest rate swaps and other	1,039	216
Deferred Tax Assets, Gross, Total	48,205	37,007
Valuation allowance	(7,148)	(1,377)
Total deferred income tax assets, net	41,057	35,630
Depreciation	5,069	3,123
Europe pension and other	2,552	2,481
Amortization and other	9,146	7,297
Total deferred income tax liabilities	$ 16,767	$ 12,901