Debt (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Long-Term Debt
Long term debt including current maturities	$ 12,839	$ 15,520
Current maturities	(4,173)	(4,759)
Long-term debt	8,666	10,761
Procurian term loan [Member]
Long-Term Debt
Interest Rates, Minimum	1.99%
Interest Rates, Maximum	3.09%
Long term debt including current maturities	12,666	14,667
Capital lease and Other debt [member]
Long-Term Debt
Interest Rates, Minimum	2.25%
Interest Rates, Maximum	10.27%
Long term debt including current maturities	$ 173	$ 853