Senior Subordinated Notes (Details Narrative) (USD $) In Thousands, unless otherwise specified	3 Months Ended												12 Months Ended			0 Months Ended	12 Months Ended				0 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Feb. 01, 2013 Senior Subordinated Notes	Dec. 31, 2012 Senior Subordinated Notes	Dec. 31, 2011 Senior Subordinated Notes	Dec. 31, 2010 Senior Subordinated Notes	Dec. 31, 2009 Senior Subordinated Notes	Feb. 01, 2013 Senior Subordinated Notes - Issued February 2013
Proceeds Notes issued																				$ 7,000	$ 6,000
Interest rate on notes payable																	8.00%				3.75%
Interest expense	1,643	1,770	1,799	1,879	2,003	2,228	2,247	2,279	2,466	2,593	2,678	2,829	7,091	8,757	10,566		578	567	567
Notes held by related parties																	3,250				4,000
Repayments of notes, cash																1,000
Amortizing term note to Bankers' Bank, Madison, WI																					$ 2,000