Equity Transactions (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended							6 Months Ended	9 Months Ended		12 Months Ended				3 Months Ended
	Mar. 31, 2014	Sep. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Mar. 30, 2011 Convertible Debt [Member] Equity [Member]	Mar. 29, 2011 Convertible Debt [Member] Equity [Member]	Mar. 31, 2011 Note Warrant2 [Member]	Mar. 31, 2011 Class of Warrant or Right [Domain]
Class of Stock [Line Items]
Stock Repurchased During Period, Shares	0										0.9	2.6
CASH DIVIDEND DECLARED PER COMMON SHARE	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10		$ 0.10			$ 0.40
Noncontrolling Interest, Increase from Business Combination	$ (1,275,000)		$ 0
Noncontrolling Interest in Variable Interest Entity	5,751,000		(634,000)	0							5,170,000	0
Net Income (Loss) Attributable to Noncontrolling Interest	(694,000)		(634,000)
Equity Transactions [Roll Forward]
Balance as of December 31, 2011	528,650,000		518,705,000						518,705,000		518,705,000
NET INCOME	(1,861,000)		(12,269,000)
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	(388,000)		155,000
Adjustments Related to Tax Withholding for Share-based Compensation	2,427,000		2,061,000
Balance as of September 30, 2012	523,511,000		506,282,000	518,705,000							528,650,000	518,705,000
Dividends, Common Stock, Cash			4,045,000	4,031,000	4,119,000	4,118,000	4,115,000	8,233,000	4,045,000	12,352,000		16,383,000
Class of Warrant or Right, Outstanding													0.5	3.5
Warrant Option Strike Price														$ 64.09
Proceeds from Issuance of Warrants															27,600,000	4,100,000
Proceeds from Stock Options Exercised	343,000		209,000
Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Financing Activities	1,130,000		140,000
Share-based Compensation	2,109,000		5,518,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	529,262,000		505,648,000								533,820,000
Stock Repurchased During Period, Value	$ 0										$ 29,100,000	$ 77,700,000