Income Taxes (Details 2) (USD $)	12 Months Ended			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2013 Capital loss carryforward	Dec. 31, 2012 Capital loss carryforward	Dec. 31, 2013 Net operating loss carryforwards	Dec. 31, 2012 Net operating loss carryforwards
Deferred tax liabilities:
Deferred sales commissions	$ (7,405,000)		$ (6,928,000)
Property and equipment	(8,010,000)		(6,706,000)
Benefit plans	(9,723,000)		(10,620,000)
Identifiable intangible assets	(16,041,000)		(16,697,000)
Unrealized gains on investment securities	(1,084,000)		(1,853,000)
Prepaid expenses	(2,138,000)		(2,100,000)
Total gross deferred liabilities	(44,401,000)		(44,904,000)
Deferred tax assets:
Accrued compensation	8,491,000		10,893,000
Additional pension and postretirement liability	28,935,000		11,663,000
Other accrued expenses	5,167,000		5,151,000
Unrealized losses on investment securities	843,000		962,000
Unrealized losses on investments in partnerships	789,000		2,031,000
Capital loss carryforwards	169,000		9,474,000
Excess tax basis on investment in subsidiary	17,921,000
Nonvested stock	21,070,000		21,860,000
Unused state tax credits	972,000		866,000
State net operating loss carryforwards	6,284,000		6,521,000
Other	4,230,000		3,962,000
Total gross deferred assets	94,871,000		73,383,000
Net deferred tax asset	25,775,000		11,493,000
Other net deferred tax liabilities being capital in nature			2,500,000
State tax credit carryforwards that will expire between 2024 and 2029 if not utilized			600,000
State tax credit carryforwards that will expire in 2026 if not utilized			300,000
Valuation allowance
Valuation allowance	(24,695,000)		(16,986,000)	(10,600,000)	(18,600,000)	(6,400,000)	(6,100,000)
Increase in valuation allowance related to non-cash impairment charge to Legend					17,900,000
Decrease in valuation allowance related to realized capital gains on securities in investment portfolios and capital gain distributions from investments				7,600,000
Decrease in valuation allowance related to reduction in the tax loss on the sale of Legend				800,000
Increase in valuation allowance related to losses from partnership investments				1,200,000	600,000
Reduction in valuation allowance due to realized capital gains on securities and appreciation in fair value of investment portfolios				800,000
Decrease in the valuation allowance recorded as an increase to accumulated other comprehensive loss	$ 2,024,000	$ (2,955,000)