CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Oct. 31, 2014	Oct. 31, 2013
Cash flows from operating activities
Net income	$ 86,771	$ 63,728
Adjustments to reconcile net income to net cash used in operating activities, net of assets and liabilities disposed:
Depreciation and amortization	14,770	9,523
Loss on disposal of a retail store	275
Gain on repurchase of unsecured promissory notes	(1,893)
Change in contingent purchase price payable	(4,186)
Gain on the sale of joint venture interest	(2,365)
Equity based compensation	8,431	6,826
Tax benefit from exercise/vesting of equity awards	11,657	4,639
Deferred financing charges	657	565
Changes in operating assets and liabilities:
Accounts receivable, net	(294,502)	(219,198)
Inventories	(79,654)	(42,238)
Income taxes, net	30,889	18,727
Prepaid expenses and other current assets	2,849	3,031
Other assets, net	(5,265)	(10,628)
Accounts payable, accrued expenses and other liabilities	69,090	28,849
Net cash used in operating activities	(162,476)	(136,176)
Cash flows from investing activities
Capital expenditures	(33,892)	(15,714)
Proceeds from sale of interest in joint venture	2,695
Proceeds from sale of a retail store	517
Net cash used in investing activities	(30,680)	(15,714)
Cash flows from financing activities
Proceeds from sale of common stock, net	128,686
Proceeds from notes payable, net	105,814	150,781
Repurchase of unsecured promissory notes	(17,755)
Proceeds from exercise of equity awards	665	1,016
Excess tax benefit from exercise/vesting of equity awards	6,978	2,526
Taxes paid for net share settlement	(4,316)	(1,005)
Noncontrolling interest investment		1,905
Net cash provided by financing activities	220,072	155,223
Foreign currency translation adjustments	151	(882)
Net increase in cash and cash equivalents	27,067	2,451
Cash and cash equivalents at beginning of period	22,091	27,360
Cash and cash equivalents at end of period	49,158	29,811
Cash paid during the year for:
Interest	5,314	6,120
Income taxes	$ 5,146	$ 15,445