Fair Value Measurements (Details) (USD $)	3 Months Ended													3 Months Ended
Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013 Estimated Fair Value [Member] Fair Value, Measurements, Recurring [Member]	Sep. 30, 2013 Estimated Fair Value [Member] Fair Value, Measurements, Recurring [Member]	Dec. 31, 2012 Estimated Fair Value [Member] Fair Value, Measurements, Recurring [Member]	Dec. 31, 2013 Level 1 [Member] Fair Value, Measurements, Recurring [Member]	Sep. 30, 2013 Level 1 [Member] Fair Value, Measurements, Recurring [Member]	Dec. 31, 2012 Level 1 [Member] Fair Value, Measurements, Recurring [Member]	Dec. 31, 2013 Level 2 [Member] Fair Value, Measurements, Recurring [Member]	Sep. 30, 2013 Level 2 [Member] Fair Value, Measurements, Recurring [Member]	Dec. 31, 2012 Level 2 [Member] Fair Value, Measurements, Recurring [Member]	Dec. 31, 2013 Level 3 [Member] Fair Value, Measurements, Recurring [Member]	Sep. 30, 2013 Level 3 [Member] Fair Value, Measurements, Recurring [Member]	Dec. 31, 2012 Level 3 [Member] Fair Value, Measurements, Recurring [Member]	Dec. 31, 2012 Go Cash, LLC [Member]	Dec. 31, 2013 Go Cash, LLC [Member]
Financial assets that are measured at fair value on a recurring basis
Marketable equity securities			$ 2,092,000	$ 2,339,000	$ 4,588,000	$ 2,092,000	$ 2,339,000	$ 4,588,000	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0
Forward contracts			1,952,000	1,813,000		0	0		1,952,000	1,813,000		0	0
Contingent consideration	(28,400,000)	(16,100,000)	(16,120,000)	(16,089,000)	(28,386,000)	0	0	0	0	0	0	(16,120,000)	(16,089,000)	(28,386,000)		(4,800,000)
Net financial assets (liabilities or temporary equity)			(12,076,000)	(11,937,000)	(23,798,000)	2,092,000	2,339,000	4,588,000	1,952,000	1,813,000	0	(16,120,000)	(16,089,000)	(28,386,000)
Contingent consideration liability	28,400,000	16,100,000	16,120,000	16,089,000	28,386,000	0	0	0	0	0	0	16,120,000	16,089,000	28,386,000		4,800,000
Accretion expense	200,000
Additional contingent consideration															$ 4,800,000

Amount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations.

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Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Trading Securities which consist of all investments in certain debt and equity securities that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for which an entity has elected the fair value option. Trading generally reflects active and frequent buying and selling, and trading securities are generally used with the objective of generating profits on short-term differences in price, but this category of investments may also include items which are not intended to be sold in the near term or for which the fair value option has been elected.

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