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Debt Arrangements - Additional Information (Detail) - USD ($) |  |  |  |  |  | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 19, 2021 | Apr. 17, 2020 | Aug. 14, 2019 | Apr. 25, 2019 | Aug. 22, 2016 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020 | Sep. 30, 2020
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Line of credit utilized borrowing capacity |  |  |  |  |  |  | $ 16,800,000 |  |  |
Debt to earnings before Interest, Taxes and Depreciation ratio |  |  | 225.00% |  |  |  |  |  |  |
Line of credit remaining borrowing capacity |  |  |  |  |  |  | 45,200,000 |  |  |
Letters of credit outstanding amount |  |  |  |  |  |  | 100,000 |  |  |
Proceeds from long-term debt | [1] |  |  |  |  |  | 42,954,000 | $ 41,163,000 |  |
U.S. [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  | $ 5,900,000 |  |  |
Expiration date |  |  |  |  |  |  | Jun. 30, 2024 |  |  |
Interest rate for Line of credit |  |  |  |  |  |  | 1.236% |  |  |
Asia Pacific [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Restricted cash used to secure bank debt |  |  |  |  |  |  | $ 300,000 |  | $ 600,000 |
LIBOR [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate of LIBOR plus |  |  | 1.125% |  |  |  |  |  |  |
LIBOR [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate of LIBOR plus |  |  | 1.50% |  |  |  |  |  |  |
Austrian Subsidiary [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 1.216% |  |  |
Increased borrowing capacity |  |  | $ 65,000,000 |  |  |  |  |  |  |
Extended debt instrument date |  |  | Jun. 30, 2024 |  |  | Jun. 30, 2021 |  |  |  |
Borrowings |  |  |  |  |  |  | $ 600,000 |  |  |
Expiration date |  |  |  |  |  |  | Jun. 30, 2024 |  |  |
Polish Subsidiary [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  | $ 6,600,000 |  |  |
Interest rate for Line of credit |  |  |  |  |  |  | 1.305% |  |  |
Polish Subsidiary [Member] | Warsaw Interbank Offer Rate [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate of LIBOR plus |  |  |  |  |  |  | 1.125% |  |  |
Expiration date |  |  |  |  |  |  | Jun. 30, 2024 |  |  |
Australian Subsidiary [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  | $ 3,700,000 |  |  |
Interest rate for Line of credit |  |  |  |  |  |  | 1.15% |  |  |
Expiration date |  |  |  |  |  |  | Jun. 30, 2024 |  |  |
Indonesian Subsidiary [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  | 3.501% |  |  |  |  |
Line of credit utilized borrowing capacity |  |  |  |  |  |  | $ 6,300,000 |  |  |
Outstanding letters of credit, current |  |  |  |  |  |  | $ 800,000 |  |  |
Expiration date |  |  |  |  | Apr. 30, 2024 |  |  |  |  |
Proceeds from long-term debt |  |  |  |  | $ 8,000,000.0 |  |  |  |  |
New Zealand Subsidiary {Member} |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  | 3.90% |  |  | 3.15% |  |  |
Outstanding letters of credit, current |  |  |  |  |  |  | $ 3,800,000 |  |  |
Expiration date |  |  |  | Aug. 26, 2021 |  |  |  |  |  |
Proceeds from long-term debt |  |  |  | $ 5,300,000 |  |  |  |  |  |
Corporate Aircraft [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  | $ 6,800,000
Corporate Aircraft [Member] | Term Loan [Member] | PNC Equipment Finance, LLC [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  | $ 20,500,000 |  |  |  |  |  |  |  |
Debt instrument, payment terms |  | 120 months |  |  |  |  |  |  |  |
Interest rate |  | 2.744% |  |  |  |  |  |  |  |
Debt instrument, frequency of periodic payment |  | The loan is payable in 119 equal monthly installments |  |  |  |  |  |  |  |
Debt instrument, date of first required payment |  | Mar. 01, 2021 |  |  |  |  |  |  |  |
Debt instrument, description |  |  |  |  |  |  | The loan is payable in 119 equal monthly installments, which commenced on March 1, 2021 with a final payment of any outstanding principal and accrued interest due and payable on the final monthly payment date. |  |  |
Line of credit utilized borrowing capacity |  |  |  |  |  |  | $ 19,800,000 |  |  |
Outstanding letters of credit, current |  |  |  |  |  |  | $ 2,100,000 |  |  |
[1] | Non-cash investing and financing activities: The Company purchased a new corporate aircraft during six-month period ended June 30, 2021 with a term loan in the principal amount of $20.5 million. For further information regarding this transaction, refer to Note P, “Debt Arrangements.

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- Definition Identification of the lender and information about a contractual promise to repay a short-term or long-term obligation, which includes borrowings under lines of credit, notes payable, commercial paper, bonds payable, debentures, and other contractual obligations for payment. This may include rationale for entering into the arrangement, significant terms of the arrangement, which may include amount, repayment terms, priority, collateral required, debt covenants, borrowing capacity, call features, participation rights, conversion provisions, sinking-fund requirements, voting rights, basis for conversion if convertible and remarketing provisions. The description may be provided for individual debt instruments, rational groupings of debt instruments, or by debt in total. + References Reference 1: 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 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 Reference 3: 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 4: 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 5: 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(13)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 6: 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)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 + Details
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