Debt (Details Textual) (USD $)	9 Months Ended
	Sep. 30, 2012 Rate	Dec. 31, 2011
Debt (Textual) [Abstract]
Long-term debt	$ 28,011,000	$ 15,520,000
Extended date of mature, after	Mar. 02, 2013
Prime rate percentage	7.00%
Procurian term loan	25,000,000
Balance term loan	13,000,000
Additional borrowing entitled	12,000,000
Revolving Promissory Note [Member]
Debt (Textual) [Abstract]
Interest rates	4.00%
Principal under the term loan	2,000,000
Promissory note maturity date	Dec. 31, 2012
Outstanding amount	2,000,000
Effective rate of interest	4.21%
Non Revolving Promissory Note [Member]
Debt (Textual) [Abstract]
Interest rates	4.50%
Principal under the term loan	500,000
Promissory note maturity date	Oct. 31, 2014
Outstanding amount	200,000
Effective rate of interest	4.71%
Procurian term loan [Member]
Debt (Textual) [Abstract]
Long-term debt	26,500,000	15,500,000
Effective interest rate being paid	1.99%
Interest Rate Swap Hedge [Member]
Debt (Textual) [Abstract]
Interest rate swap hedge agreement	10,000,000
Term Loans [Member]
Debt (Textual) [Abstract]
Principal under the term loan	400,000
PNC Bank [Member] | Revolving Credit Facility [Member]
Debt (Textual) [Abstract]
Extended date of mature, before	Aug. 02, 2015
Line of credit facility, unused capacity, commitment fee	0.25%
Procurian term loan	15,000,000
PNC Bank [Member] | Procurian term loan [Member]
Debt (Textual) [Abstract]
Federal fund open rate	Federal Funds Open Rates plus 0.5%
Federal fund open rate percentage	0.50%
Debt instrument basis spread on variable rate sum of daily LIBOR rate	Sum of the daily LIBOR rate plus 1.0%
Daily LIBOR rate percentage	1.00%
Debt instrument basis spread on variable rate daily to six month LIBOR rate	Daily to six month LIBOR rate plus a margin ranging from 1..5% to 2.0%
Line of credit facility, periodic payment, principal	400,000
Annual interest rate	Monthly
PNC Bank [Member] | Procurian term loan [Member] | Maximum [Member]
Debt (Textual) [Abstract]
Six Month LIBOR rate percentage	2.00%
PNC Bank [Member] | Procurian term loan [Member] | Minimum [Member]
Debt (Textual) [Abstract]
Six Month LIBOR rate percentage	1.50%
PNC Bank [Member] | Interest Rate Swap Hedge [Member]
Debt (Textual) [Abstract]
Term loan was effectively converted to a fixed interest rate	50.00%
Term loan was effectively converted to a fixed interest fate interest rate	1.34%
Line of credit facility, amount outstanding	0	0
PNC Bank [Member] | Letter of Credit [Member]
Debt (Textual) [Abstract]
Procurian term loan	5,000,000
Venture Bank [Member] | Revolving Credit Facility [Member]
Debt (Textual) [Abstract]
Prime rate	prime rate plus 2.0%
Prime rate percentage	2.00%
Line of credit facility, amount outstanding	0	400,000
Procurian term loan	1,000,000
Venture Bank [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Debt (Textual) [Abstract]
Prime rate percentage	7.00%
Comerica Bank [Member]
Debt (Textual) [Abstract]
Extended date of mature, before	Dec. 16, 2011
Extended date of mature, after	Dec. 14, 2012
Line of credit facility, unused capacity, commitment fee	0.25%
Line of credit facility, amount outstanding	0	0
Issuance fees	0.50%
Comerica Bank [Member] | Letter of Credit [Member]
Debt (Textual) [Abstract]
Procurian term loan	$ 10,000,000