Commitments and Contingencies - Loss Contingencies (Details) (USD $) In Thousands, unless otherwise specified	7 Months Ended		1 Months Ended						1 Months Ended
	Jan. 31, 2008 Materially Misstated Financial Statements officers	Dec. 31, 2012 Other Litigation	Jun. 30, 2011 Criminal Materially Misstated Financial Statements	Jun. 30, 2011 Civil Materially Misstated Financial Statements	Jan. 31, 2012 Officer, Flood Criminal Materially Misstated Financial Statements	Jun. 30, 2010 Officer, Flood Criminal Materially Misstated Financial Statements	Jul. 31, 2009 Officer, Flood Criminal Materially Misstated Financial Statements	Feb. 28, 2009 Officer, Flood Criminal Materially Misstated Financial Statements counts	Aug. 31, 2009 Officer, Strohm Materially Misstated Financial Statements	Jun. 30, 2010 Officer, Strohm Criminal Materially Misstated Financial Statements	Feb. 28, 2009 Officer, Strohm Criminal Materially Misstated Financial Statements counts
Loss Contingencies
Number of officers	2
Loss contingency, damages paid, value							$ 3,390
Loss contingency, legal fees sought to be recovered									3,296
Loss contingency, number of convicted counts								9			1
Prison sentence, years						4 years
Probation, in years						3 years				2 years
Probation sentence, in hours										150 hours
Loss contingency, legal fees incurred					373		373
Loss contingency, legal fees, paid in escrow							248
Loss contingency, legal fees, refunded from escrow					248
Loss contingency, fees and expenses charged			973	865
Loss contingency, legal fees, interest			362
Loss contingency, legal fees, interest, rate			0.18
Loss contingency, estimate of possible loss		$ 1,000