Financing Arrangements (Narrative) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended	3 Months Ended			3 Months Ended
	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2012	Mar. 30, 2012	Mar. 31, 2012 Note Warrant
Subsidiary, Sale of Stock [Line Items]
Line of credit facility, maximum borrowing capacity				$ 2,000
Line of credit facility, amount outstanding		900		1,500
Amount repaid	600
Floating interest rate on outstanding revolving line of credit			1.50%
Interest rate floor on the SVB system			3.25%
Debt instrument amount				4,000
Warrant for stock options				185
Subordinated note maturity date		Feb. 28, 2019
Rate of subordinated note		10.00%
Period of interest rate premium on prinicpal payments		3 years
Share Price				$ 11.54
Trading period prior to the issuance of the warrants		45 days
Fair value of warrants		1,100
Expected life					7 years
Expected volatility					68.18%
Risk free interest rate					1.61%
Dividend yield		0.00%			0.00%
Unamortized debt discount	1,017	978	1,017
Life of subordinated note		7 years
Interest Expense					$ 39