Goodwill and Intangible Assets - Schedule of Intangibles (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Intangible Assets, Net (Including Goodwill) [Abstract]
Gross Assets	$ 12,804	$ 12,804
Accumulated Amortization	6,969	5,807
Net Assets	$ 5,835	6,997
Minimum
Intangible Assets, Net (Including Goodwill) [Abstract]
Estimated Useful Life	1 year
Maximum
Intangible Assets, Net (Including Goodwill) [Abstract]
Estimated Useful Life	15 years
Client relationships
Intangible Assets, Net (Including Goodwill) [Abstract]
Gross Assets	$ 5,805	5,805
Accumulated Amortization	3,308	2,692
Net Assets	$ 2,497	$ 3,113
Client relationships | Minimum
Intangible Assets, Net (Including Goodwill) [Abstract]
Estimated Useful Life	5 years	5 years
Client relationships | Maximum
Intangible Assets, Net (Including Goodwill) [Abstract]
Estimated Useful Life	15 years	15 years
Covenants not to compete
Intangible Assets, Net (Including Goodwill) [Abstract]
Gross Assets	$ 986	$ 986
Accumulated Amortization	823	744
Net Assets	$ 163	$ 242
Covenants not to compete | Minimum
Intangible Assets, Net (Including Goodwill) [Abstract]
Estimated Useful Life	6 months	6 months
Covenants not to compete | Maximum
Intangible Assets, Net (Including Goodwill) [Abstract]
Estimated Useful Life	15 years	15 years
Supplier agreements
Intangible Assets, Net (Including Goodwill) [Abstract]
Estimated Useful Life	5 years	5 years
Gross Assets	$ 1,582	$ 1,582
Accumulated Amortization	1,582	1,411
Net Assets	$ 0	$ 171
License agreement
Intangible Assets, Net (Including Goodwill) [Abstract]
Estimated Useful Life	15 years	15 years
Gross Assets	$ 4,431	$ 4,431
Accumulated Amortization	1,256	960
Net Assets	$ 3,175	$ 3,471