Stockholders' Equity (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		0 Months Ended			52 Months Ended	111 Months Ended	95 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Nov. 04, 2014	May 02, 2014	May 17, 2010	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014
Schedule of Shareholders' Equity [Line Items]
Cash dividends declared per common share	$ 0	$ 0
Dividend Declared [Member]
Schedule of Shareholders' Equity [Line Items]
Cash dividends declared per common share			$ 0.09	$ 0.09
2010 Stock Repurchase Program
Schedule of Shareholders' Equity [Line Items]
Stock repurchase program authorized percentage					5.00%
Stock repurchase program amount authorized (in shares)					2,900,000
Stock repurchased during period (in shares)						2,600,000
Aggregate price of shares repurchased since inception						$ 31.5
Average price of shares repurchased since inception (per share)						$ 11.97
2005 401(k) Stock Repurchase Program
Schedule of Shareholders' Equity [Line Items]
Stock repurchased during period (in shares)	100,000	100,000					5,200,000
Aggregate price of shares repurchased since inception							42.2
Average price of shares repurchased since inception (per share)							$ 8.18
2006 Director and Officer Repurchase Program
Schedule of Shareholders' Equity [Line Items]
Stock repurchased during period (in shares)	2,000	44,000						1,800,000
Aggregate price of shares repurchased since inception								$ 14.0
Average price of shares repurchased since inception (per share)								$ 7.76