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Credit Facility - Additional information (Detail) - USD ($) |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Apr. 20, 2018 | Jul. 13, 2017 | Apr. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Oct. 01, 2020
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit facility maximum borrowing capacity |  |  |  |  |  |  | $ 15,000,000
Current borrowing capacity under line of credit facility |  |  |  | $ 22,000,000 | $ 13,000,000 |  |
Payment of deferred financing costs |  |  |  | 246,000 |  | $ 71,000 |
Deferred financing costs |  |  |  | 225,000 | 263,000 |  |
Term Loan Facility [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit facility maximum borrowing capacity |  |  |  |  |  |  | 17,500,000
Outstanding borrowings amount |  |  |  | $ 17,500,000 | 16,000,000 |  |
Revolving Line of Credit [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit facility maximum borrowing capacity |  |  |  |  |  |  | $ 30,000,000
Percentage of eligible accounts receivable |  |  |  | 85.00% |  |  |
Outstanding borrowings amount |  |  |  | $ 0 | 9,500,000 |  |
Possible early debt repayment |  |  | $ 4,000,000 |  | $ 5,000,000 |  |
Revolving Line of Credit [Member] | United States [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Percentage of eligible unbilled accounts |  |  |  | 60.00% |  |  |
Revolving Line of Credit [Member] | Canada [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit facility maximum borrowing capacity |  |  |  | $ 10,000,000 |  |  |
Percentage of eligible accounts receivable |  |  |  | 85.00% |  |  |
Percentage of eligible unbilled accounts |  |  |  | 60.00% |  |  |
Revolving Line of Credit [Member] | Line of Credit [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit facility maximum borrowing capacity |  |  |  | $ 5,000,000 |  |  |
Revolving Line of Credit [Member] | Swing Loans [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit facility maximum borrowing capacity |  |  |  | $ 6,000,000 |  |  |
Federal Funds Rate [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 0.50% |  |  |
LIBOR Floor Rate [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt Instrument Percentage Adjusted LIBOR Floor Rate |  |  |  | 0.50% |  |  |
PNC Bank, N.A. [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit facility maximum borrowing capacity |  | $ 47,500,000 |  |  |  |  |
Payment of deferred financing costs | $ 752,000 |  |  |  |  |  |
PNC Bank, N.A. [Member] | Term Loan Facility [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit facility maximum borrowing capacity |  | 17,500,000 |  |  |  |  |
Credit facility, periodic payment |  | 1,100,000 |  |  |  |  |
PNC Bank, N.A. [Member] | Revolving Line of Credit [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit facility maximum borrowing capacity |  | 30,000,000 |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Revolving credit facility percentage margin over base rate |  |  |  | 1.25% |  |  |
Term loan percentage margin over base rate |  |  |  | 2.50% |  |  |
Revolving credit facility percentage margin adjusted LIBOR rate |  |  |  | 2.25% |  |  |
Term loan percentage margin adjusted LIBOR rate |  |  |  | 3.50% |  |  |
Maximum [Member] | PNC Bank, N.A. [Member] | Revolving Line of Credit [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit facility additional borrowing capacity upon certain conditions |  | $ 15,000,000 |  |  |  |  |
Minimum [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Revolving credit facility percentage margin over base rate |  |  |  | 0.50% |  |  |
Term loan percentage margin over base rate |  |  |  | 1.75% |  |  |
Revolving credit facility percentage margin adjusted LIBOR rate |  |  |  | 1.50% |  |  |
Term loan percentage margin adjusted LIBOR rate |  |  |  | 2.75% |  |  |

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- Definition Line of credit facility additional borrowing capacity upon certain conditions. + References No definition available. + Details
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- Definition Percentage of eligible accounts receivable used to determine borrowings available under credit facility. + References No definition available. + Details
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- Definition Percentage of eligible unbilled accounts used to determine borrowings available under credit facility. + References No definition available. + Details
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- Definition Revolving credit facility percentage margin adjusted LIBOR rate. + References No definition available. + Details
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- Definition Revolving credit facility percentage margin over base rate. + References No definition available. + Details
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- Definition Term loan percentage margin adjusted LIBOR rate. + References No definition available. + Details
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- Definition Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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- 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. + References No definition available. + Details
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of the required periodic payments of both interest and principal. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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