Organization and Summary of Significant Accounting Policies - narrative (Details)
$ in Thousands |
|
1 Months Ended |
12 Months Ended |
|
|
Jan. 01, 2018 |
Dec. 31, 2017
USD ($)
|
Dec. 31, 2017
USD ($)
segment
item
|
Dec. 31, 2016
USD ($)
|
Dec. 31, 2015
USD ($)
|
| Ownership percentage |
|
100.00%
|
100.00%
|
|
|
| Amount outstanding under the credit facility |
|
$ 1,300
|
$ 1,300
|
$ 1,300
|
|
| Unused availability |
|
2,500
|
2,500
|
1,000
|
|
| Cash and cash equivalents |
|
1,538
|
1,538
|
5,142
|
$ 3,206
|
| Cash and cash equivalents in bank accounts of subsidiaries outside the U.S. |
|
|
1,200
|
|
|
| Accounts Receivable Additional Disclosures [Abstract] |
|
|
|
|
|
| Allowance for doubtful accounts |
|
374
|
374
|
364
|
|
| Income Taxes |
|
|
|
|
|
| Uncertain tax positions accrued |
|
0
|
$ 0
|
$ 0
|
|
| Federal income tax rate |
|
|
34.00%
|
|
|
| Decrease in deferred tax assets due to TCAJA |
|
(9,500)
|
|
|
|
| Valuation allowance offset to decrease in deferred tax assets due to TCAJA |
|
9,500
|
|
|
|
| Accumulated earnings in controlled foreign subsidiaries |
|
5,200
|
$ 5,200
|
|
|
| Amount of accumulated foreign earnings includible in taxable income due to TCAJA |
|
2,300
|
$ 2,300
|
|
|
| Period over which the repatriation of foreign could be deferred |
|
|
8 years
|
|
|
| Revenue Recognition [Abstract] |
|
|
|
|
|
| Percentage of sales generated by internal sales team |
|
|
70.00%
|
|
|
| Percentage of sales by reseller |
|
|
30.00%
|
|
|
| Research and development expense |
|
|
|
|
|
| Software development costs capitalized |
|
0
|
$ 0
|
|
|
| Concentration of Credit Risk and Fair Value of Financial Instruments |
|
|
|
|
|
| Number of financial institutions in which the company maintains its cash and cash equivalents in the US | item |
|
|
1
|
|
|
| Cash and cash equivalents held in foreign countries that is not insured |
|
1,200
|
$ 1,200
|
|
|
| Business Segments |
|
|
|
|
|
| Number of operating segments | segment |
|
|
1
|
|
|
| North America |
|
|
|
|
|
| Revenue Recognition [Abstract] |
|
|
|
|
|
| Percentage of sales generated by internal sales team |
|
|
91.00%
|
|
|
| Percentage of sales by reseller |
|
|
9.00%
|
|
|
| International |
|
|
|
|
|
| Revenue Recognition [Abstract] |
|
|
|
|
|
| Percentage of sales by reseller |
|
|
70.00%
|
|
|
| Federal. |
|
|
|
|
|
| Income Taxes |
|
|
|
|
|
| Federal net operating loss carryforwards |
|
$ 68,700
|
$ 68,700
|
|
|
| Forecast |
|
|
|
|
|
| Income Taxes |
|
|
|
|
|
| Federal income tax rate |
21.00%
|
|
|
|
|
| Minimum |
|
|
|
|
|
| Property and Equipment |
|
|
|
|
|
| Estimated useful life |
|
|
3 years
|
|
|
| Revenue Recognition [Abstract] |
|
|
|
|
|
| Term of maintenance and content services contracts |
|
|
1 year
|
|
|
| Maximum |
|
|
|
|
|
| Property and Equipment |
|
|
|
|
|
| Estimated useful life |
|
|
7 years
|
|
|
| Income Taxes |
|
|
|
|
|
| Federal income tax rate |
|
|
35.00%
|
|
|
| Revenue Recognition [Abstract] |
|
|
|
|
|
| Term of maintenance and content services contracts |
|
|
5 years
|
|
|