Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jan. 02, 2011
Current
Federal	$ 14,505,000	$ 12,507,000	$ 20,296,000
State and local	3,950,000	5,843,000	4,009,000
Foreign	1,878,000	2,054,000	1,618,000
Total current	20,333,000	20,404,000	25,923,000
Deferred
Federal	(34,916,000)	10,267,000	7,830,000
State and local	(7,721,000)	237,000	(146,000)
Foreign	(878,000)	(117,000)	(315,000)
Total deferred	(43,515,000)	10,387,000	7,369,000
Total income tax expense (benefit)	(23,182,000)	30,791,000	33,292,000
The United States and foreign components of income (loss) before income taxes
United States	(100,191,000)	69,941,000	83,388,000
Foreign	3,905,000	6,727,000	5,098,000
Income (loss) from continuing operations before income taxes	(96,286,000)	76,668,000	88,486,000
Differences between total income tax expense (benefit) and the amount computed by applying the statutory federal income tax rate
Computed expected income tax expense (benefit)	(33,700,000)	26,834,000	30,970,000
Net effect of state income taxes	2,907,000	3,952,000	2,290,000
Production activities deduction	0	0	(469,000)
Goodwill impairment	8,765,000	0	0
Change in beginning of year valuation allowance	(1,225,000)	(117,000)	40,000
Other, net	71,000	122,000	461,000
Total income tax expense (benefit)	(23,182,000)	30,791,000	33,292,000
Differences between total income tax expense (benefit) and the amount computed by applying the statutory federal income tax rate
Computed expected income tax expense (benefit) (as a percent)	(35.00%)	35.00%	35.00%
Net effect of state income taxes (as a percent)	3.00%	5.00%	3.00%
Production activities deduction (as a percent)	0.00%	0.00%	(1.00%)
Goodwill impairment (as a percent)	9.00%	0.00%	0.00%
Change in beginning of year valuation allowance (as a percent)	(1.00%)	0.00%	0.00%
Other, net (as a percent)	0.00%	0.00%	1.00%
Income tax expense (benefit) for the period (as a percent)	(24.00%)	40.00%	38.00%
Allocation of income tax expense (benefit)
Continuing operations	(23,182,000)	30,791,000	33,292,000
Discontinued operations	(4,981,000)	(1,016,000)	(569,000)
Loss on sale	(2,147,000)	0	0
Stockholders' equity	(736,000)	(5,910,000)	(463,000)
Total	(31,046,000)	23,865,000	32,260,000
Deferred tax assets
Deferred compensation and retirement plan	31,515,000	27,039,000
Accrued expenses not deductible until paid	5,459,000	6,570,000
Employee stock-based compensation	4,000,000	6,426,000
Accrued payroll not deductible until paid	2,363,000	3,573,000
Accounts receivable, net	1,963,000	1,221,000
Other, net	158,000	185,000
State income tax	69,000	494,000
Federal net operating loss carry forwards	151,000	151,000
Foreign net operating loss carry forwards	2,439,000	2,590,000
State net operating loss carry forwards	2,214,000	1,206,000
Total gross deferred tax assets	50,331,000	49,455,000
Less valuation allowance	(2,439,000)	(3,638,000)		(3,700,000)
Net deferred tax assets	47,892,000	45,817,000
Deferred tax liabilities
Property, plant and equipment	(11,787,000)	(16,298,000)
Goodwill and other intangibles	(81,859,000)	(112,377,000)
Total gross deferred tax liabilities	(93,646,000)	(128,675,000)
Net deferred tax liabilities	(45,754,000)	(82,858,000)
Non-current deferred tax assets netted with long-term deferred tax liabilities	$ 39,700,000	$ 36,200,000