Significant Accounting Policies - Other (Details)		12 Months Ended
	Dec. 13, 2013	Jan. 31, 2019 USD ($) segment shares	Jan. 31, 2018 USD ($) segment shares	Jan. 31, 2015	Feb. 01, 2019 USD ($)	Feb. 01, 2018 USD ($)
Allowance for Doubtful Accounts
Allowance for doubtful accounts		$ 345,000	$ 349,000
Bad debt expense		13,000	234,000
Concessions Accrual
Concessions Costs		44,000	48,000
Leases
Area under lease (sq. ft.)	24,335			10,350
Duration of rent allowance	8 months			2 months
Capitalized Software Development Costs
Capitalized computer software, additions		3,003,000	1,836,000
Capitalized computer software, amortization		1,160,000	2,113,000
Research and development expense		$ 4,261,000	$ 5,352,000
Goodwill and Intangible Assets
Number of operating segments | segment		1	1
Number of reportable segments | segment		1
Equity Awards
Share-based compensation expense		$ 629,000	$ 1,109,000
Income Taxes
Reserves for uncertain tax positions and corresponding interest and penalties		$ 275,000	$ 295,000
Net Earnings (Loss) Per Common Share
Preferred stock to common stock conversion ratio		1
New Accounting Pronouncements and Changes in Accounting Principles
Cumulative impact of new accounting principle		$ 1,440,000
Convertible Preferred Stock
Net Earnings (Loss) Per Common Share
Antidilutive securities (in shares) | shares		2,895,464	2,949,995
Stock Options
Net Earnings (Loss) Per Common Share
Antidilutive securities (in shares) | shares		1,580,657	2,173,156
Minimum
Capitalized Software Development Costs
Useful life of capitalized computer software		3 years
Maximum
Capitalized Software Development Costs
Useful life of capitalized computer software		5 years
Restricted Stock
Equity Awards
Shares surrendered for tax withholding (in shares) | shares		37,249	32,033
Tax withholding obligations		$ 62,000	$ 42,000
Shares awarded (in shares) | shares		501,666	220,337
Restricted Stock | Minimum
Equity Awards
Required service period		1 year
Restricted Stock | Maximum
Equity Awards
Required service period		4 years
Internally-developed software | Minimum
Goodwill and Intangible Assets
Estimated useful life		1 year
Internally-developed software | Maximum
Goodwill and Intangible Assets
Estimated useful life		10 years
ASU 2016-02
Leases
Right of use assets					$ 175,000
Additional lease liability					$ 175,000
Retained Earnings
New Accounting Pronouncements and Changes in Accounting Principles
Cumulative impact of new accounting principle		$ 1,440,000
Retained Earnings | ASU 2014-09
New Accounting Pronouncements and Changes in Accounting Principles
Cumulative impact of new accounting principle						$ 1,400,000