Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Cash flows provided by (used in) operating activities:
Net (loss) income	$ (709)	$ 763	$ 14,138
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Depreciation and amortization	2,185	2,009	1,502
Stock-based compensation expense	1,210	924	636
Deferred rent expense	(555)	(148)	(232)
Non-cash interest	162	579	404
Loss on extinguishment of debt, non-cash portion	465
Mark-to-market adjustment of preferred stock warrant liability		(228)	503
Mark-to-market adjustment of equity participation right		(276)	(276)
Deferred income taxes	(2,171)	(767)	(12,254)
Net change in operating assets and liabilities:
Accounts receivable	610	(8,648)	4,186
Prepaid expenses and other current assets	(199)	(728)	(721)
Other assets	(61)	2,117	(2,355)
Accounts payable	(57)	(773)	1,910
Accrued expenses	2,921	(1,609)	(232)
Other liabilities	(221)	(65)	488
Deferred revenue	4,847	(2,575)	1,336
Net cash provided by (used in) operating activities	8,427	(9,425)	9,033
Cash flows used in investing activities:
Purchases of property and equipment	(746)	(419)	(120)
Acquisitions			(3,543)
Net cash used in investing activities	(746)	(419)	(3,663)
Cash flows (used in) provided by financing activities:
Net decrease in line of credit		(7,000)	4,005
Proceeds from borrowings under long-term debt		3,500
Proceeds from stock option and warrant exercises	205	92	37
Payments of long-term debt	(7,365)	(1,135)
Payments of capital lease obligations	(2,106)	(1,060)	(598)
Proceeds from initial public offering, net of $4,174 issuance costs		34,576
Payment of debt and line of credit issuance costs	(213)	(100)	(111)
Net cash (used in) provided by financing activities	(9,479)	28,873	3,333
Effect of exchange rate changes on cash	(165)	219	(15)
Net (decrease) increase in cash and cash equivalents	(1,963)	19,248	8,688
Cash and cash equivalents, beginning of period	30,716	11,468	2,780
Cash and cash equivalents, end of period	28,753	30,716	11,468
Supplemental cash flow disclosures:
Cash paid for interest	599	1,036	868
Cash paid for income taxes	821	1,609	739
Supplemental disclosure of non-cash investing and financing activities:
Acquisition of equipment through capital leases	2,358	3,821	2,443
Conversion of preferred stock into common stock		32,685
Conversion of preferred stock warrants into common stock warrants		$ 1,324