Description of Business and Basis of Presentation - Additional Information (Detail) - USD ($) |
Mar. 31, 2018 |
Mar. 06, 2018 |
Dec. 31, 2017 |
Mar. 31, 2017 |
Dec. 31, 2016 |
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| Description Of Business And Basis Of Presentation [Line Items] | |||||
| Line of credit, outstanding borrowings | $ 1,823,000 | ||||
| Working capital | 20,500,000 | ||||
| Cash and cash equivalents, including restricted cash | 8,730,000 | $ 11,896,000 | $ 3,827,000 | $ 9,175,000 | |
| Accounts receivable | 9,739,000 | $ 10,124,000 | |||
| Business Financing Agreement | |||||
| Description Of Business And Basis Of Presentation [Line Items] | |||||
| Line of credit facility, maximum borrowing capacity | $ 6,000,000 | ||||
| Western Alliance | Business Financing Agreement | |||||
| Description Of Business And Basis Of Presentation [Line Items] | |||||
| Line of credit, outstanding borrowings | $ 1,800,000 |
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- Definition Description of business and basis of presentation. No definition available.
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- Definition A financial calculation subtracting current liabilities from current assets. No definition available.
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- Definition Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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