Commitments and Contingencies (Details) (USD $)	Jan. 31, 2013
Commitments and Contingencies [Abstract]
Estimate of reasonably possible losses	$ 400,000
Contractual Obligations [Abstract]
2013	36,393,121
2014	3,172,332
2015	177,866
2016	173,026
2017	105,585
Residual	0
Total	40,021,930
Non-cancelable operating leases [Member]
Contractual Obligations [Abstract]
2013	769,431
2014	600,904
2015	162,975
2016	157,217
2017	97,307
Residual	0
Total	1,787,834
Revolving line of credit [Member]
Contractual Obligations [Abstract]
2013	8,425,496
2014	0
2015	0
2016	0
2017	0
Residual	0
Total	8,425,496
Term debt [Member]
Contractual Obligations [Abstract]
2013	28,060,042
2014	57,402
2015	0
2016	0
2017	0
Residual	0
Total	28,117,444
Obligations under capital lease [Member]
Contractual Obligations [Abstract]
2013	13,210
2014	14,026
2015	14,891
2016	15,809
2017	8,278
Residual	0
Total	66,214
Debt discount [Member]
Contractual Obligations [Abstract]
2013	(875,058)
2014	0
2015	0
2016	0
2017	0
Residual	0
Total	(875,058)
Notes payable - related party [Member]
Contractual Obligations [Abstract]
2013	0
2014	2,500,000
2015	0
2016	0
2017	0
Residual	0
Total	$ 2,500,000