CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Cash flows from operating activities
Net income	$ 72,042	$ 106,369
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	22,898	18,213
Loss on disposal of fixed assets	1,295	338
Change in contingent purchase price payable		(899)
Equity loss in unconsolidated affiliate	820	3
Equity based compensation	13,265	11,430
Deferred income taxes	(2,682)
Deferred financing charges	609	607
Changes in operating assets and liabilities:
Accounts receivable, net	(315,426)	(339,418)
Inventories	(4,986)	(84,699)
Income taxes, net	48,526	51,450
Prepaid expenses and other current assets	5,851	8,109
Other assets, net	(279)	(684)
Accounts payable, accrued expenses and other liabilities	40,816	44,421
Net cash used in operating activities	(117,251)	(184,760)
Cash flows from investing activities
Investment in unconsolidated affiliate	(35,432)	(25,490)
Capital expenditures	(18,400)	(34,315)
Net cash used in investing activities	(53,832)	(59,805)
Cash flows from financing activities
Proceeds from notes payable, net	91,334	171,840
Taxes paid for net share settlement	(6,955)
Debt issuance costs	(690)
Proceeds from exercise of equity awards	260	376
Net cash provided by financing activities	83,949	172,216
Foreign currency translation adjustments	(457)	(1,707)
Net decrease in cash and cash equivalents	(87,591)	(74,056)
Cash and cash equivalents at beginning of period	132,587	128,354
Cash and cash equivalents at end of period	44,996	54,298
Cash payments:
Interest, net	3,163	3,440
Income tax payments (refund), net	$ (7,534)	$ 7,203