Commitments and Contingencies (Details) (USD $)	3 Months Ended			21 Months Ended				3 Months Ended			12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Dec. 31, 2012	Sep. 30, 2011 Sales tax contingency [Member]	Dec. 31, 2012 MASSACHUSETTS [Member]	Sep. 30, 2009 MASSACHUSETTS [Member]	Dec. 31, 2012 Kemper [Member]	Sep. 30, 2012 PENNSYLVANIA [Member]	Jun. 30, 2012 PENNSYLVANIA [Member]	Dec. 31, 2012 PENNSYLVANIA [Member]	Dec. 31, 2011 CALIFORNIA [Member] Unemployment tax contingency [Member]	Dec. 31, 2012 CALIFORNIA [Member] Unemployment tax contingency [Member]	Dec. 31, 2003 CALIFORNIA [Member] Unemployment tax contingency [Member]
Commitments and Contingencies [Abstract]
Disclosure threshold for future non-cancelable purchase and service obligations			greater than $100,000 and one year
Non-cancelable purchase and service obligations [Abstract]
2013			$ 6,308,000
2014			7,006,000
2015			5,700,000
2016			4,902,000
2017			1,430,000
Thereafter			5,490,000
Total obligations			30,836,000
Massachusetts Tax Assessment [Abstract]
Assessment related to alleged underpayment of corporate income taxes					2,500,000	470,000
Kemper Insurance Companies [Abstract]
Outstanding claims minimum							2,900,000
Outstanding claims maximum							5,000,000
Pennsylvania Sales Taxes [Abstract]
Accrual of sales taxes	2,500,000			2,500,000
Refund claim for Pennsylvania sales taxes paid in error										2,900,000
Recorded amount of Pennsylvania refund									2,900,000
Collection of Pennsylvania refund claim								2,900,000
California Unemployment Taxes [Abstract]
Unemployment tax reserve account assessment relating to California employees, including penalties and interest												8,100,000	5,600,000
Actual unemployment tax settlement relating to California employees, including penalties and interest		$ 3,100,000									$ 3,100,000