Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
|
| Disaggregation of Revenue [Line Items] | ||||
| Net Sales | $ 47,923,000 | $ 39,018,000 | $ 132,389,000 | $ 116,130,000 |
| Deferred revenue balances | 0 | $ 0 | ||
| Minimum | ||||
| Disaggregation of Revenue [Line Items] | ||||
| Payment terms on invoiced amount | 30 days | |||
| Maximum | ||||
| Disaggregation of Revenue [Line Items] | ||||
| Payment period | 3 years | |||
| Payment terms on invoiced amount | 75 days | |||
| Hardware and software product | ||||
| Disaggregation of Revenue [Line Items] | ||||
| Net Sales | 44,100,000 | 35,556,000 | $ 120,073,000 | 104,417,000 |
| Software - security and highly interdependent with support | ||||
| Disaggregation of Revenue [Line Items] | ||||
| Net Sales | 1,433,000 | 1,343,000 | 5,029,000 | 4,357,000 |
| Maintenance, support and other services revenue | ||||
| Disaggregation of Revenue [Line Items] | ||||
| Net Sales | $ 2,390,000 | $ 2,119,000 | $ 7,287,000 | $ 7,356,000 |
| X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The period of payment terms for accounts receivable. No definition available.
|
| X | ||||||||||
- Definition The duration at which a customer can make payments on a contract. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|