Significant Accounting Policies - Additional Information (Details)		3 Months Ended		12 Months Ended
	Dec. 13, 2013 ft²	Apr. 30, 2016 USD ($) shares	Oct. 31, 2014 ft²	Jan. 31, 2017 USD ($) segment shares	Jan. 31, 2016 USD ($) shares	Sep. 08, 2016 USD ($)
Allowance for Doubtful Accounts
Allowance for doubtful accounts				$ 198,449	$ 155,407
Bad debt expense				121,025	124,235
Concessions Accrual
Concessions Costs				52,000	54,000
Leases
Property and equipment, net				1,903,509	2,454,075
Accumulated depreciation and amortization				3,447,198	2,407,746
Capitalized Software Development Costs
Capitalized computer software, additions				$ 1,979,000	0
Useful life of capitalized computer software				5 years
Capitalized computer software, amortization				$ 2,771,437	3,073,479
Research and development expense				7,453,638	9,093,353
Revenue Recognition
Deferred professional costs				500,000	571,000
Accumulated amortization of deferred costs				370,000	265,000
Amortization of professional expenses				$ 254,000	136,000
Goodwill and Intangible Assets
Number of operating segments | segment				1
Number of reportable segments | segment				1
Severances
Severance expenses				$ 360,000	43,000
Equity Awards
Share-based compensation expense				1,787,367	2,386,490
Income Taxes
Reserves for uncertain tax positions and corresponding interest and penalties				$ 263,000	$ 0
Net Earnings (Loss) Per Common Share
Preferred stock to common stock conversion ratio				1
Convertible Preferred Stock
Net Earnings (Loss) Per Common Share
Antidilutive securities (in shares) | shares				2,949,995	2,949,995
Restricted Stock
Net Earnings (Loss) Per Common Share
Antidilutive securities (in shares) | shares				377,135	112,380
Stock Options
Net Earnings (Loss) Per Common Share
Antidilutive securities (in shares) | shares				2,100,480	2,411,879
Warrant
Net Earnings (Loss) Per Common Share
Antidilutive securities (in shares) | shares				1,400,000	1,400,000
Employee Severance
Severances
Accrued severances				$ 9,000	$ 26,000
Minimum
Goodwill and Intangible Assets
Estimated useful life				1 year
Maximum
Goodwill and Intangible Assets
Estimated useful life				15 years
Interpoint Partners, LLC
Leases
Area under lease (sq. ft.) | ft²	24,335
Lease duration	102 months
Duration of rent allowance	8 months
Meta
Leases
Area under lease (sq. ft.) | ft²			10,350
Lease duration			2 months
Duration of rent allowance			63 months
Opportune IT
Capitalized Software Development Costs
Intangible assets						$ 650,000
Assets Held under Capital Leases
Leases
Property and equipment, net				$ 134,000	1,652,000
Accumulated depreciation and amortization				$ 104,000	1,166,000
Restricted Stock Award
Equity Awards
Required service period				1 year
Restricted Stock
Equity Awards
Shares surrendered for tax withholding (in shares) | shares		8,241
Tax withholding obligations		$ 12,000
Shares awarded (in shares) | shares				828,225
Internally-developed software | Opportune IT
Capitalized Software Development Costs
Intangible assets				$ 350,000		$ 350,000
Credit Agreement | Senior term loan
New Accounting Pronouncements and Changes in Accounting Principles
Deferred finance costs				199,000
Accumulated amortization, deferred finance costs				155,000
Accounting Standards Update 2015-03 | Deferred Financing Costs
New Accounting Pronouncements and Changes in Accounting Principles
Deferred finance costs				$ (270,000)
Accounting Standards Update 2015-03 | Term Loan
New Accounting Pronouncements and Changes in Accounting Principles
Deferred finance costs					$ 270,000