Income Taxes (Details) (USD $)	12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
Current [Abstract]
Federal	$ 3,825,000	$ 507,000
State	749,000	251,000
Foreign	19,000	37,000
Total current	4,593,000	795,000
Deferred [Abstract]
Federal	84,000	1,183,000
State	150,000	133,000
Total Deferred	234,000	1,315,000
Income tax expense	4,827,000	2,111,000
Effective income tax rate from continuing operations (in hundredths)	47.10%	54.90%
Non-tax deductible impairment loss		1,791,000
Foreign pre-tax loss	193,000	307,000
Calgary facility shutdown cost included in foreign pre-tax loss	566,000
Income Tax Reconciliation [Abstract]
Income before income taxes and noncontrolling interest	10,250,000	3,849,000
Federal income tax computed at statutory rate	3,485,000	1,178,000
State income taxes, net of federal benefits	527,000	254,000
Foreign income not subject to US tax	66,000	104,000
Foreign tax	19,000	37,000
Dividend received	167,000	0
Goodwill impairment	0	609,000
Earn-out adjustment	(34,000)	(136,000)
Other, principally non-deductible expenses	145,000	65,000
Other	452,000	0
Income tax expense	4,827,000	2,111,000
Deferred tax liabilities [Abstract]
Unrecognized tax benefits	0	0
Current [Member]
Deferred tax assets [Abstract]
Bad debts reserves	341,000	263,000
Vacation accrual	1,098,000	1,065,000
State taxes	712,000	493,000
Deferred compensation	1,568,000	1,219,000
Net operating loss	209,000	211,000
Accrued costs of discontinued operations	186,000	188,000
Acquisition costs	240,000	242,000
Other	605,000	219,000
Total deferred tax assets	4,959,000	3,900,000
Deferred tax liabilities [Abstract]
Goodwill & other intangibles	0	0
Gain on involuntary conversion	0	0
Tax over book depreciation	0	0
Deferred compensation	0	0
Other	0	0
Total deferred tax liabilities	0	0
Net deferred tax asset (liability)	4,959,000	3,900,000
Non Current [Member]
Deferred tax assets [Abstract]
Bad debts reserves	0	0
Vacation accrual	0	0
State taxes	0	0
Deferred compensation	0	0
Net operating loss	0	0
Accrued costs of discontinued operations	0	0
Acquisition costs	0	0
Other	0	0
Total deferred tax assets	0	0
Deferred tax liabilities [Abstract]
Goodwill & other intangibles	(3,793,000)	(3,317,000)
Gain on involuntary conversion	(1,166,000)	(1,176,000)
Tax over book depreciation	(10,604,000)	(8,761,000)
Deferred compensation	(112,000)	(92,000)
Other	(786,000)	(144,000)
Total deferred tax liabilities	(16,461,000)	(13,490,000)
Net deferred tax asset (liability)	$ (16,461,000)	$ (13,490,000)