Subsequent Event (Details) (USD $)	6 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Apr. 17, 2015	May 06, 2015	Oct. 22, 2014	Apr. 16, 2015
Subsequent Event
Subsequent Event [Line Items]
Stock repurchase program, authorized amount				$ 45,000,000
Digital Products Business
Subsequent Event [Line Items]
Asset sale, promissory note, principal amount					16,000,000
Proceeds from sale of business	1,500,000	0
Digital Products Business | Subsequent Event
Subsequent Event [Line Items]
Asset sale, promissory note, principal amount						15,500,000
Proceeds from sale of business			$ 15,700,000