Subsequent Events (Details) (USD $)				0 Months Ended	3 Months Ended	0 Months Ended		0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Feb. 06, 2014 Subsequent Event [Member]	Mar. 17, 2014 Subsequent Event [Member]	May 04, 2012 Curepet, Inc. [Member]	Jan. 27, 2014 Curepet, Inc. [Member] Subsequent Event [Member]	Mar. 07, 2014 Shareholder Securities Class Action [Member] Subsequent Event [Member]
Subsequent Event [Line Items]
Purchase Price of Business Acquisition, Cost of Acquired Entity							$ 6,350,000
Payments to acquire cost method investment						2,000,000
Common Stock, Dividends, Per Share, Declared				$ 0.075
Stock Repurchased and Retired During Period, Shares					137,071
Stock Repurchased During Period, Value					2,230,000
Payments for Legal Settlements								4,200,000
Derivative Financial Instruments, Liabilities, Fair Value Disclosure	$ 14,420,000	$ 17,495,000	$ 7,590,000				$ 5,000,000
Cost method investment, ownership percentage						19.80%