CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2018	Jul. 31, 2017
Operating activities
Net loss	$ (1,392)	$ (5,187)
Adjustments to reconcile net loss to net cash flows used in operating activities
Depreciation and amortization	2,344	2,509
Deferred tax expense (benefit)	202	(260)
Equity-based compensation expense	711	521
Loss on disposal of fixed assets	14	2
Provision on uncollectible accounts	(31)	(298)
Gain from sale of marketable securities	0	(142)
Changes in operating assets and liabilities
Accounts receivable	2,622	5,355
Inventories	1,985	(2,317)
Change in contract assets and contract liabilities	(1,932)	(1,065)
Accounts payable	(4,071)	(713)
Accrued compensation and payroll taxes	257	(1,019)
Customers' deposits	(2,370)	489
Income taxes receivable and payable	(405)	(1,442)
Prepaid expenses and other current assets	(1,127)	(513)
Other assets and liabilities	(263)	1,252
Net cash used in operating activities	(3,456)	(2,828)
Net Cash Provided by (Used in) Investing Activities [Abstract]
Capital expenditures	(571)	(1,526)
Proceeds from Sale and Maturity of Marketable Securities	0	142
Proceeds from sales of property and equipment	0	1
Net cash used in investing activities	(571)	(1,383)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Proceeds from revolving lines	20,082	16,936
Payments of debt on revolving lines of credit	(17,618)	(13,237)
Payments of other debt	(176)	(120)
(Decrease) increase in drafts payable	(27)	285
Payments (borrowings) on capitalized lease obligations	(154)	567
Release of treasury stock	0	170
Stock options exercised and taxes related to restricted shares vested	252	(256)
Net cash provided by financing activities	2,359	4,345
Effect of Exchange Rate on Cash and Cash Equivalents	(298)	604
Net (decrease) increase in cash, cash equivalents and restricted cash	(1,966)	738
Cash, cash equivalents and restricted cash - beginning of period	8,321	8,701
Cash, cash equivalents and restricted cash - end of period	6,355	9,439
Supplemental cash flow information
Interest paid	588	362
Income taxes paid	797	524
Fixed assets acquired under capital leases	0	697
Funds held in escrow related to the sale of Filtration assets	$ 0	$ 250